mark ApkUpdatePackageInstallerReceiver non-exported

F-SIGANDROID-INTENT-001

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

Recorded evidence

—score not recorded

signalapp/Signal-AndroidReported fixsignalapp/Signal-Android

mark ApkUpdatePackageInstallerReceiver non-exported

fixed publicly (high confidence mapping)

details

Finding IDs: F-SIGANDROID-INTENT-001
Status: fixed publicly (high confidence mapping)
Reported via: private security contact
Note: maps to GHSL-2026-102: Intent redirection through the website APK updater. public commit fecb30a86eaa on Signal-Android changes ApkUpdatePackageInstallerReceiver from android:exported="true" to false; the commit is included in v8.4.2 and the official latest channel was at 8.15.3 at verification time.

F-SIGANDROID-INTENT-001: Access control. An exported updater receiver accepts callers outside the intended boundary. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-SIGANDROID-INTENT-001

Security area (1seal assessment): Authorization. The website APK installer receiver is no longer exported, restricting access from other Android applications. Reviewed 21 Sep 2026.

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How this page groups evidence

This identifier groups recorded evidence; it is not an additional CVE, independent-vulnerability count or guarantee of vendor confirmation. Fixed code, released versions, attribution and independent discovery are distinct claims. Absent metadata means not recorded, not disproved. Counting rules.