Calendar Widget: Month/Agenda

Milan Sillik · Build 2026.10.28-317

sk.mildev84.agendareminder
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Static analysis completeScanned 2026-11-06 11:34 UTC

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

Backend checks: 4 unauthenticated read checks against backends referenced in this build — 2 refused access, 1 answered, 1 could not be determined. Each check describes one request at the recorded scan time and does not establish the backend's current state. An undetermined result is not evidence that the backend is closed.

Overview

Review needed

2 high or critical finding categories to review

Calendar Widget: Month/Agenda (sk.mildev84.agendareminder) scored grade F, 18 out of 100, in a static scan of version 2026.10.28-317 on 2026-11-06. It has 2 high or critical finding categories of 6, across 6 occurrences. One finding was confirmed live: an anonymous request reached a backend the app references and it answered without authentication. No credential was used and no stored data was read. 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 categories66 occurrences
High / critical2Category count
Tracking SDKs5Presence, not observed traffic
Assessment score18 / 100Grade F

Start with these findings

criticalCloud Firestore publicly readable — confirmed reachable1 occurrence

Interpretation & review guidance

Cloud Firestore answered an unauthenticated read, so the project's security rules allow anyone to read documents. The check asks for a collection that cannot exist, so it retrieves no data; but Firestore rules are additive and have no deny, so a rule permissive enough to answer an invented path also permits every collection in the database. Lock the rules to require auth and scope by owner.

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
1 historically verified occurrence at the recorded scan time. Current reachability is not established.
Open in all findingsRequest a correction
highGoogle OAuth client secret1 occurrence

Interpretation & review guidance

A Google OAuth client secret. Shipping this in a mobile client is a misconfiguration — it can allow impersonation of the app's OAuth flow.

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
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
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
View all 6 categories

Privacy

17 requested permissions · 1 flagged high-risk classes.

Review privacy signals →

Build & components

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

Inspect build evidence →
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Findings

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

criticalCloud Firestore publicly readable — confirmed reachable1 occurrence

Interpretation & review guidance

Cloud Firestore answered an unauthenticated read, so the project's security rules allow anyone to read documents. The check asks for a collection that cannot exist, so it retrieves no data; but Firestore rules are additive and have no deny, so a rule permissive enough to answer an invented path also permits every collection in the database. Lock the rules to require auth and scope by owner.

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
1 historically verified occurrence at the recorded scan time. Current reachability is not established.

Evidence preview

Evidence type
Static string match
Representative location
firestore/android-caw
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.

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Link to categoryRequest a correction
highGoogle OAuth client secret1 occurrence

Interpretation & review guidance

A Google OAuth client secret. Shipping this in a mobile client is a misconfiguration — it can allow impersonation of the app's OAuth flow.

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
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
classes2.dex
Recorded match
•••••••• (21–40 chars, redacted)
Detector rule
google_oauth_secret
Recorded file locations
  • classes2.dex

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.

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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
lowFirebase Realtime Database reference1 occurrence

Interpretation & review guidance

A Firebase Realtime Database URL. Nearly every app that uses Firebase ships one. It's only an exposure if the database rules are world-readable — that's what live verification checks.

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_db
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
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)1 occurrence

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
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
AIza•••••••• (21–40 chars, redacted)
Detector rule
google_api_key
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

Privacy signals

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

Requested permissions17
Flagged high-risk classes1
Detected SDKs5

Calendar

Requested permission inventory (17)
  • android.permission.ACCESS_ADSERVICES_AD_ID
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_SYSTEM_EXEMPTED
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.READ_CALENDAR
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.SCHEDULE_EXACT_ALARM
  • android.permission.USE_EXACT_ALARM
  • android.permission.USE_FULL_SCREEN_INTENT
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • com.android.vending.BILLING
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • sk.mildev84.agendareminder.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

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

Data the app can access
Calendar
Calendar
Persistent identifiers (referenced in code)
Advertising ID (AAID)Device ID / IMEI
Where it can go
Third parties present (4)
Google AdMobGoogle Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
  • Persistent-identifier APIs referenced in code (Advertising ID (AAID), Device ID / IMEI) with 4 analytics/ad SDK(s) present — the mechanism used for cross-app profiling.
  • Calendar 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 comparison not recorded.

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

Advertising
Google AdMob
Analytics
Google Analytics for FirebaseGoogle Firebase AnalyticsGoogle Tag Manager
Consent
IAB TCF

Build & components

Scanned build 2026.10.28-317. Store metadata may describe a newer release.

APK SHA-2561945841c9062fcec13a8800e6c277b8895384add3795d7cd61c6521538534eff

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

Signer
MIL Development self-signed
Scheme
V2
Key
RSA 1024-bit
Algorithm
sha1WithRSA
Validity
2012-11-22 → 2042-11-15
Cert SHA-256
56:d4:b0:60:56:65:ec:ba:a6:6d:78:82:43:40:aa:e7:3a:ec:89:1b:9b:41:b9:0f:93:d2:4c:55:a0:e8:b6:c0

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

105 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:activity1.13.0None recorded
androidx.activity:activity-compose1.13.0None recorded
androidx.activity:activity-ktx1.13.0None recorded
androidx.annotation:annotation-experimental1.5.1None recorded
androidx.appcompat:appcompat1.8.0None recorded
androidx.appcompat:appcompat-resources1.8.0None recorded
androidx.autofill:autofill1.0.0None recorded
androidx.browser:browser1.10.0None recorded
androidx.cardview:cardview1.0.0None recorded
androidx.compose.animation:animation1.12.1None recorded
androidx.compose.animation:animation-core1.12.1None recorded
androidx.compose.foundation:foundation1.12.1None recorded
androidx.compose.foundation:foundation-layout1.12.1None recorded
androidx.compose.material3.adaptive:adaptive1.3.0None recorded
androidx.compose.material3.adaptive:adaptive-layout1.3.0None recorded
androidx.compose.material3:material31.4.0None recorded
androidx.compose.material3:material3-adaptive-navigation-suite1.4.0None recorded
androidx.compose.material:material-icons-core1.7.8None recorded
androidx.compose.material:material-icons-extended1.7.8None recorded
androidx.compose.material:material-ripple1.12.1None recorded
androidx.compose.runtime:runtime1.12.1None recorded
androidx.compose.runtime:runtime-annotation1.12.1None recorded
androidx.compose.runtime:runtime-retain1.12.1None recorded
androidx.compose.runtime:runtime-saveable1.12.1None recorded
androidx.compose.ui:ui1.12.1None recorded
androidx.compose.ui:ui-geometry1.12.1None recorded
androidx.compose.ui:ui-graphics1.12.1None recorded
androidx.compose.ui:ui-text1.12.1None recorded
androidx.compose.ui:ui-text-google-fonts1.12.1None recorded
androidx.compose.ui:ui-tooling1.12.1None recorded
androidx.compose.ui:ui-tooling-data1.12.1None recorded
androidx.compose.ui:ui-tooling-preview1.12.1None recorded
androidx.compose.ui:ui-unit1.12.1None recorded
androidx.compose.ui:ui-util1.12.1None recorded
androidx.constraintlayout:constraintlayout2.2.1None recorded
androidx.coordinatorlayout:coordinatorlayout1.1.0None recorded
androidx.core:core1.19.1None recorded
androidx.core:core-ktx1.19.1None recorded
androidx.core:core-remoteviews1.1.0None recorded
androidx.core:core-viewtree1.0.0None recorded
androidx.cursoradapter:cursoradapter1.0.0None recorded
androidx.customview:customview1.2.0None recorded
androidx.customview:customview-poolingcontainer1.0.0None recorded
androidx.datastore:datastore1.2.1None recorded
androidx.datastore:datastore-core1.2.1None recorded
androidx.datastore:datastore-preferences1.2.1None recorded
androidx.datastore:datastore-preferences-core1.2.1None recorded
androidx.documentfile:documentfile1.0.0None recorded
androidx.drawerlayout:drawerlayout1.1.1None recorded
androidx.dynamicanimation:dynamicanimation1.1.0None recorded
androidx.emoji2:emoji21.4.0None recorded
androidx.emoji2:emoji2-views-helper1.4.0None recorded
androidx.fragment:fragment1.5.7None recorded
androidx.fragment:fragment-ktx1.3.6None recorded
androidx.graphics:graphics-path1.0.1None recorded
androidx.graphics:graphics-shapes1.0.1None recorded
androidx.interpolator:interpolator1.0.0None recorded
androidx.legacy:legacy-support-core-utils1.0.0None recorded
androidx.lifecycle:lifecycle-livedata-core2.11.0None recorded
androidx.lifecycle:lifecycle-livedata-core-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-process2.11.0None recorded
androidx.lifecycle:lifecycle-runtime2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-compose2.11.0None recorded
androidx.lifecycle:lifecycle-runtime-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-compose2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-ktx2.11.0None recorded
androidx.lifecycle:lifecycle-viewmodel-savedstate2.11.0None recorded
androidx.loader:loader1.1.0None recorded
androidx.localbroadcastmanager:localbroadcastmanager1.0.0None recorded
androidx.navigation:navigation-common2.10.2None recorded
androidx.navigation:navigation-compose2.10.2None recorded
androidx.navigation:navigation-runtime2.10.2None recorded
androidx.navigationevent:navigationevent1.1.2None recorded
androidx.navigationevent:navigationevent-compose1.1.2None recorded
androidx.preference:preference1.2.1None recorded
androidx.print:print1.0.0None recorded
androidx.privacysandbox.ads:ads-adservices1.1.0-beta11None recorded
androidx.privacysandbox.ads:ads-adservices-java1.1.0-beta11None recorded
androidx.profileinstaller:profileinstaller1.4.0None recorded
androidx.recyclerview:recyclerview1.2.1None recorded
androidx.room:room-ktx2.8.5None recorded
androidx.room:room-runtime2.8.5None recorded
androidx.savedstate:savedstate1.5.0None recorded
androidx.savedstate:savedstate-compose1.5.0None recorded
androidx.savedstate:savedstate-ktx1.5.0None 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.tracing:tracing1.2.0None recorded
androidx.transition:transition1.5.0None recorded
androidx.vectordrawable:vectordrawable1.1.0None recorded
androidx.vectordrawable:vectordrawable-animated1.1.0None recorded
androidx.versionedparcelable:versionedparcelable1.1.1None recorded
androidx.viewpager2:viewpager21.0.0None recorded
androidx.viewpager:viewpager1.0.0None recorded
androidx.window:window1.5.0None recorded
androidx.window:window-core1.5.0None recorded
com.google.android.material:material1.14.0None recorded
com.squareup.okhttp3:okhttp5.5.0None recorded
kotlinx:coroutines_android1.9.0None recorded
kotlinx:coroutines_core1.9.0None recorded
kotlinx:coroutines_play_services1.9.0None recorded
org.jetbrains.compose.ui:ui-backhandler1.9.1None recorded
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About this app · store information

About this app

See your Events & Google Tasks in 2 stylish widgets

Content ratingEveryone
Download size7.6 MB
Privacy policyPublished →
Developer sitewww.mil84.com

Screenshots

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Scan history

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

Scanned (UTC)BuildScoreGrade
2026-11-06 11:34 UTC2026.10.28-31718F

View changes between the last two scans →

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

SARIFFindings CSVCoverage JSONSigned evidenceSBOM

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apk-scanner.com exposure grade
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