Costco Wholesale

Costco Wholesale · Build 26.10.2.2

com.costco.app.android
Rescan appExport / share
Static analysis completeScanned 2026-11-05 19:37 UTC

Static checks identify review items, not a guarantee of safety.

Backend checks: 2 unauthenticated read checks against backends referenced in this build — 2 refused access. Each check describes one request at the recorded scan time and does not establish the backend's current state.

Overview

Review needed

1 high or critical finding category to review

Costco Wholesale (com.costco.app.android) scored grade D, 54 out of 100, in a static scan of version 26.10.2.2 on 2026-11-05. It has 1 high or critical finding category of 6, across 8 occurrences. 5 tracking SDKs are present in the package, which describes what ships, not what runs or what it sends. This is static analysis of a single build: it does not observe the app running and does not establish that any data is exposed.

Finding categories68 occurrences
High / critical1Category count
Tracking SDKs5Presence, not observed traffic
Assessment score54 / 100Grade D

Start with these findings

highHardcoded HTTP Basic-auth credentials2 occurrences

Interpretation & review guidance

Hardcoded HTTP Basic-auth credentials (a username:password pair, base64-encoded in an Authorization header) are embedded in the app. If the endpoint is live, anyone can extract and reuse them — rotate the credential and move auth server-side. Confirm it isn't a placeholder.

Remediation: How to store secrets in a mobile app (without hardcoding) →

Reference: CWE-798 · MASVS-STORAGE-1 — what the control asks for, and other apps with the same finding.

Evidence
2 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.
Open in all findingsRequest a correction
mediumShort signing key (RSA 1024-bit)1 occurrence

Interpretation & review guidance

The signing key is shorter than the modern 2048-bit RSA minimum. Short keys are cryptographically weaker; a release should re-key to at least RSA-2048 (or an EC key).

Remediation: Android app signing explained (v1, v2, v3 & Janus) →

Reference: CWE-326 · MASVS-CRYPTO-1 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.
Open in all findingsRequest a correction
lowBackground location access with advertising SDKs present1 occurrence

Interpretation & review guidance

The app can access location in the background (even when closed) and also ships advertising/attribution SDKs. Background location is a heightened-scrutiny area for Google Play and privacy regulators; confirm it is essential and disclosed, and that location isn't shared with ad networks.

Reference: CWE-359 · MASVS-PRIVACY-1 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.
Open in all findingsRequest a correction
View all 6 categories

Privacy

29 requested permissions · 6 flagged high-risk classes.

Review privacy signals →

Build & components

137 components recorded. Certificate parsing does not validate APK signature integrity.

Inspect build evidence →
Sign in to watchCompare with another app

Findings

6 categories · 8 occurrences. Severity totals describe categories. Expand a finding for interpretation and review guidance.

highHardcoded HTTP Basic-auth credentials2 occurrences

Interpretation & review guidance

Hardcoded HTTP Basic-auth credentials (a username:password pair, base64-encoded in an Authorization header) are embedded in the app. If the endpoint is live, anyone can extract and reuse them — rotate the credential and move auth server-side. Confirm it isn't a placeholder.

Remediation: How to store secrets in a mobile app (without hardcoding) →

Reference: CWE-798 · MASVS-STORAGE-1 — what the control asks for, and other apps with the same finding.

Evidence
2 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Static string match
Representative location
res/raw/app_config_v3.json
Recorded match
Pattern recorded; identifying value redacted.
Detector rule
basic_auth_header
Recorded file locations
  • res/raw/app_config_v3.json
  • res/raw/firebase_remote_config_default_data.json

2 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
mediumShort signing key (RSA 1024-bit)1 occurrence

Interpretation & review guidance

The signing key is shorter than the modern 2048-bit RSA minimum. Short keys are cryptographically weaker; a release should re-key to at least RSA-2048 (or an EC key).

Remediation: Android app signing explained (v1, v2, v3 & Janus) →

Reference: CWE-326 · MASVS-CRYPTO-1 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Signing metadata
Representative location
META-INF/signing:key
Recorded match
RSA-1024
Detector rule
signing
Recorded file locations
  • META-INF/signing:key

1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
lowBackground location access with advertising SDKs present1 occurrence

Interpretation & review guidance

The app can access location in the background (even when closed) and also ships advertising/attribution SDKs. Background location is a heightened-scrutiny area for Google Play and privacy regulators; confirm it is essential and disclosed, and that location isn't shared with ad networks.

Reference: CWE-359 · MASVS-PRIVACY-1 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Static privacy indicators
Representative location
pii:bgloc
Recorded match
background location + ad SDKs
Detector rule
pii
Recorded file locations
  • pii:bgloc

1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
lowData Safety label omits Location1 occurrence

Interpretation & review guidance

The app's Google Play Data Safety label omits a data category it can actually access — a permission it requests, or an advertising/device identifier it references. Under-declaring collection is a Play policy issue and a COPPA/privacy concern. This is a static signal: a requested permission is capability, not proof of collection — confirm against runtime behavior.

How often Data Safety labels disagree with the package →

Remediation: How to fill out Google Play Data Safety accurately →

Reference: CWE-359 · MASVS-PRIVACY-3 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Static string match
Representative location
data-safety:Location
Recorded match
Pattern recorded; identifying value redacted.

1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
lowFirebase Storage bucket reference1 occurrence

Interpretation & review guidance

A Firebase Cloud Storage bucket reference (the default <project>.appspot.com). Storing user files here is normal — it's only an exposure if the Storage security rules allow public read/list, which live verification tests.

Remediation: Fix a publicly readable Firebase database →

Reference: CWE-200 · CWE-284 · MASVS-STORAGE-2 — what the control asks for, and other apps with the same finding.

Evidence
1 recorded occurrence in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Static string match
Representative location
resources.arsc
Recorded match
Pattern recorded; identifying value redacted.
Detector rule
firebase_storage_bucket
Recorded file locations
  • resources.arsc

1 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction
lowGoogle API key (client-shipped; restriction unverified)2 occurrences

Interpretation & review guidance

Android apps are designed to ship Google API keys in the client; Google restricts them by app signing certificate + enabled API. This is only a problem if the key is left unrestricted — presence alone is expected, not an exposure.

Remediation: How to store secrets in a mobile app (without hardcoding) →

Reference: CWE-798 · MASVS-STORAGE-1 — what the control asks for, and other apps with the same finding.

Evidence
2 recorded occurrences in the analyzed APK. These are distinct stored findings, not a count of every source match.
Verification
Static detection; current reachability is not established.

Evidence preview

Evidence type
Static string match
Representative location
resources.arsc
Recorded match
AIza•••••••• (21–40 chars, redacted)
Detector rule
google_api_key
Recorded file locations
  • resources.arsc

2 recorded findings have inspectable metadata. Duplicate matches may share a representative location.

Review whether this belongs to intended app functionality or a bundled library. A static match does not establish runtime impact.

Preview evidence and Pro tools

Search recorded evidence and save private review notes with Pro. $99/month plus applicable tax.

Link to categoryRequest a correction

Privacy signals

Capabilities and bundled software do not prove that data was collected or transmitted.

Requested permissions29
Flagged high-risk classes6
Detected SDKs5

Background location Precise location Approx. location Camera Microphone Phone state

Requested permission inventory (29)
  • android.permission.ACCESS_BACKGROUND_LOCATION
  • android.permission.ACCESS_COARSE_LOCATION
  • android.permission.ACCESS_COURSE_LOCATION
  • android.permission.ACCESS_FINE_LOCATION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.ACCESS_WIFI_STATE
  • android.permission.CAMERA
  • android.permission.CHANGE_NETWORK_STATE
  • android.permission.CREDENTIAL_MANAGER_QUERY_CANDIDATE_CREDENTIALS
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_LOCATION
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.READ_PHONE_STATE
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.SCHEDULE_EXACT_ALARM
  • android.permission.USE_BIOMETRIC
  • android.permission.USE_FINGERPRINT
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • com.costco.app.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • com.costco.app.android.permission.FIND_A_STORE_MAP
  • com.costco.app.android.permission.MINUTES
  • com.costco.app.android.permission.PHARMACY
  • com.costco.app.android.permission.PUSH_NOTIFICATION
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.gms.permission.AD_ID
  • com.google.android.providers.gsf.permission.READ_GSERVICES

Data collection & flow (privacy signal, not part of the grade)

Data the app can access
Camera
Camera
Location
Approximate locationPrecise locationBackground location
Microphone
Microphone
Phone
Phone state / number
Photos & files
Storage (write)Storage
Persistent identifiers (referenced in code)
Advertising ID (AAID)Android IDDevice ID / IMEIHardware MAC address
Where it can go
Third parties present (2)
Google AdMobGoogle Firebase Analytics
  • Approximate location, Precise location, Background location requested while 1 ad/attribution SDK(s) are present (Google AdMob) — location commonly feeds ad targeting.
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Android ID, Device ID / IMEI +1 more) with 2 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
  • Camera, Microphone, Phone, Photos & files data requested with third-party analytics/ad SDKs present.

This maps what the app can access (permissions it requests, identifier APIs its code references) to the third parties bundled in it. It reflects capability and SDK presence — not proof that a specific value was transmitted.

Data Safety: declared vs observed (Play label vs our analysis)

Declared collected
App activityApp info and performanceMessagesWeb browsing
Declared shared
App activity
We observe the app can access
Location
⚠ Possible Data Safety mismatch. Label omits 1 category the app can access: Location.

We compare the developer's Google Play Data Safety declaration with what the binary can actually do (permissions it requests, identifier APIs and third-party SDKs it ships). A mismatch is a capability signal to confirm — a requested permission is not proof of collection.

Trackers & SDKs (5 detected · privacy signal, not part of the grade)

Advertising
Google AdMob
Analytics
Google Firebase Analytics
Consent
Google UMP (consent)IAB TCF
Crash reporting
Google Crashlytics

Build & components

Scanned build 26.10.2.2. Store metadata may describe a newer release.

APK SHA-256893401dbd364f869b396c1e8dd59bf0622bb1029cf04245a59547558081cd272

Signing certificate (who signed this build — factual, not part of the grade)

Signer
Costco Wholesale self-signed
Scheme
V3V2
Key
RSA 1024-bit
Algorithm
sha1WithRSA
Validity
2012-06-20 → 2062-06-08
Cert SHA-256
ce:c0:85:37:be:51:51:90:57:59:a0:e0:30:16:69:58:2e:ff:8e:6b:98:b6:67:6b:bd:0a:65:4a:53:52:45:fc

The certificate fingerprint identifies the parsed signing certificate. Knowing this public fingerprint does not establish ownership or validate the APK signature.

Signature integrity: not established by certificate parsing.

Component inventory

137 components. Advisory matching covers a curated set; no match is not proof that a component is vulnerability-free.

Bundled components and recorded advisory matches
ComponentVersionAdvisory matches
androidx.activity:activity1.12.4None recorded
androidx.activity:activity-compose1.12.4None recorded
androidx.activity:activity-ktx1.12.4None recorded
androidx.annotation:annotation-experimental1.5.0None recorded
androidx.appcompat:appcompat1.7.1None recorded
androidx.appcompat:appcompat-resources1.7.1None recorded
androidx.asynclayoutinflater:asynclayoutinflater1.0.0None recorded
androidx.autofill:autofill1.0.0None recorded
androidx.biometric:biometric1.1.0None recorded
androidx.camera.featurecombinationquery:featurecombinationquery1.5.3None recorded
androidx.camera:camera-camera21.5.3None recorded
androidx.camera:camera-core1.5.3None recorded
androidx.camera:camera-lifecycle1.5.3None recorded
androidx.camera:camera-video1.5.3None recorded
androidx.camera:camera-view1.5.3None recorded
androidx.cardview:cardview1.0.0None recorded
androidx.compose.animation:animation1.10.4None recorded
androidx.compose.animation:animation-core1.10.4None recorded
androidx.compose.foundation:foundation1.10.4None recorded
androidx.compose.foundation:foundation-layout1.10.4None recorded
androidx.compose.material3:material31.4.0None recorded
androidx.compose.material3:material3-window-size-class1.4.0None recorded
androidx.compose.material:material1.10.4None recorded
androidx.compose.material:material-icons-core1.7.8None recorded
androidx.compose.material:material-icons-extended1.7.8None recorded
androidx.compose.material:material-ripple1.10.4None recorded
androidx.compose.runtime:runtime1.10.4None recorded
androidx.compose.runtime:runtime-annotation1.10.4None recorded
androidx.compose.runtime:runtime-livedata1.10.4None recorded
androidx.compose.runtime:runtime-retain1.10.4None recorded
androidx.compose.runtime:runtime-saveable1.10.4None recorded
androidx.compose.ui:ui1.10.4None recorded
androidx.compose.ui:ui-geometry1.10.4None recorded
androidx.compose.ui:ui-graphics1.10.4None recorded
androidx.compose.ui:ui-text1.10.4None recorded
androidx.compose.ui:ui-tooling-preview1.10.4None recorded
androidx.compose.ui:ui-unit1.10.4None recorded
androidx.compose.ui:ui-util1.10.4None recorded
androidx.compose.ui:ui-viewbinding1.10.4None recorded
androidx.constraintlayout:constraintlayout2.2.1None recorded
androidx.constraintlayout:constraintlayout-compose1.1.1None recorded
androidx.coordinatorlayout:coordinatorlayout1.1.0None recorded
androidx.core:core1.17.0None recorded
androidx.core:core-ktx1.17.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.credentials:credentials1.2.2None recorded
androidx.credentials:credentials-play-services-auth1.2.2None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.2.0None recorded
androidx.customview:customview-poolingcontainer1.0.0None recorded
androidx.databinding:baseAdapters8.13.2None recorded
androidx.databinding:databindingKtx8.13.2None recorded
androidx.databinding:library8.13.2None recorded
androidx.databinding:viewbinding8.13.2None recorded
androidx.datastore:datastore1.2.0None recorded
androidx.datastore:datastore-core1.2.0None recorded
androidx.datastore:datastore-preferences1.2.0None recorded
androidx.datastore:datastore-preferences-core1.2.0None recorded
androidx.documentfile:documentfile1.0.0None recorded
androidx.dynamicanimation:dynamicanimation1.1.0None recorded
androidx.emoji2:emoji21.4.0None recorded
androidx.emoji2:emoji2-views-helper1.4.0None recorded
androidx.exifinterface:exifinterface1.4.2None recorded
androidx.fragment:fragment1.8.9None recorded
androidx.fragment:fragment-ktx1.8.9None recorded
androidx.graphics:graphics-path1.0.1None recorded
androidx.graphics:graphics-shapes1.0.1None recorded
androidx.hilt:hilt-lifecycle-viewmodel1.3.0None recorded
androidx.hilt:hilt-lifecycle-viewmodel-compose1.3.0None recorded
androidx.hilt:hilt-navigation-compose1.3.0None recorded
androidx.hilt:hilt-work1.2.0None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-ui1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.legacy:legacy-support-v41.0.0None recorded
androidx.lifecycle:lifecycle-extensions2.2.0None recorded
androidx.lifecycle:lifecycle-livedata2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-livedata-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-process2.10.0None recorded
androidx.lifecycle:lifecycle-runtime2.10.0None recorded
androidx.lifecycle:lifecycle-runtime-compose2.10.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-service2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-compose2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.10.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.10.0None recorded
androidx.loader:loader1.0.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.1.0None recorded
androidx.media:media1.0.0None recorded
androidx.navigation:navigation-common2.9.7None recorded
androidx.navigation:navigation-compose2.9.7None recorded
androidx.navigation:navigation-fragment2.9.7None recorded
androidx.navigation:navigation-fragment-ktx2.9.7None recorded
androidx.navigation:navigation-runtime2.9.7None recorded
androidx.navigation:navigation-ui2.9.7None recorded
androidx.navigation:navigation-ui-ktx2.9.7None recorded
androidx.navigationevent:navigationevent1.0.2None recorded
androidx.navigationevent:navigationevent-compose1.0.2None recorded
androidx.print:print1.0.0None recorded
androidx.profileinstaller:profileinstaller1.4.0None recorded
androidx.recyclerview:recyclerview1.3.2None recorded
androidx.room:room-ktx2.8.4None recorded
androidx.room:room-runtime2.8.4None recorded
androidx.savedstate:savedstate1.4.0None recorded
androidx.savedstate:savedstate-compose1.4.0None recorded
androidx.savedstate:savedstate-ktx1.4.0None recorded
androidx.slidingpanelayout:slidingpanelayout1.2.0None recorded
androidx.sqlite:sqlite2.6.2None recorded
androidx.sqlite:sqlite-framework2.6.2None recorded
androidx.startup:startup-runtime1.2.0None recorded
androidx.swiperefreshlayout:swiperefreshlayout1.2.0None recorded
androidx.tracing:tracing1.2.0None recorded
androidx.tracing:tracing-ktx1.2.0None recorded
androidx.transition:transition1.6.0None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager2:viewpager21.1.0-beta02None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.webkit:webkit1.14.0None recorded
androidx.window:window1.5.0None recorded
androidx.window:window-core1.5.0None recorded
androidx.work:work-runtime2.11.1None recorded
androidx.work:work-runtime-ktx2.11.1None recorded
com.google.android.material:material1.13.0None recorded
com.google.dagger:dagger2.56None recorded
com.google.dagger:dagger-lint-aar2.56None recorded
com.google.dagger:hilt-android2.56None recorded
com.google.dagger:hilt-core2.56None recorded
com.squareup.okhttp3:okhttp5.3.2None recorded
kotlinx:coroutines_android1.10.2None recorded
kotlinx:coroutines_core1.10.2None recorded
kotlinx:coroutines_jdk81.10.2None recorded
kotlinx:coroutines_play_services1.10.2None recorded
Export SBOM
About this app · store information

About this app

The Costco Mobile App is the easiest way to save time and money on the go.

Content ratingEveryone
Download size158.2 MB
Privacy policyPublished →
Developer sitewww.costco.com

Screenshots

App screenshotApp screenshotApp screenshotApp screenshotApp screenshotApp screenshot

Scan history

Each row is an observed scan. Gaps between scans do not establish how long a finding existed.

Scanned (UTC)BuildScoreGrade
2026-11-05 19:37 UTC26.10.2.254D

View changes between the last two scans →

Export & share

Exports describe the recorded assessment. Signed evidence proves origin and integrity, not completeness or safety.

SARIFFindings CSVCoverage JSONSigned evidenceSBOM

Coverage & gap matrix · Verify signed evidence

Embed the latest grade

Embed this grade

The badge reads the latest recorded grade each time it is loaded, and links back to the full report so a reader can see the build it covers and what the scan could not see.

apk-scanner.com exposure grade
Markdown
[![apk-scanner.com exposure grade](https://apk-scanner.com/app/com.costco.app.android/badge.svg)](https://apk-scanner.com/app/com.costco.app.android)
HTML
<a href="https://apk-scanner.com/app/com.costco.app.android"><img src="https://apk-scanner.com/app/com.costco.app.android/badge.svg" alt="apk-scanner.com exposure grade" height="20"></a>

Grades can move when a new version is scanned or when a detector is corrected. If you would rather publish a grade that cannot change under you, link a signed Proof Capsule instead.

API users can request authenticated, scan-specific exports at /v1/scans/da057394-0ecc-41e4-a5c1-d732d9a68ab6/findings.sarif (also coverage.json and proof.json).

Request a correction or removal · How to interpret a scan · Browse apps