CVE-2026-57848
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
Stoat Android app exposes ShareTargetActivity component that accepts a URI from SEND intent. It does not validate the URI, so an attacker can pass a file:// URI pointing to internal app files (e.g., database, tokens). The victim may unknowingly send these files to the attacker.
Risk Assessment
Risk of full database leak, authentication tokens, and other app files, potentially leading to account takeover and data theft.
Recommendation
Update Stoat to the patched version. Restrict intent sending from unknown apps.
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Original NVD description (English source)
Stoat for Android exports the chat.stoat.activities.ShareTargetActivity component (reachable to any process on the device via the android.intent.action.SEND intent) and accepts the file to share as a URI supplied through the android.intent.extra.STREAM extra. The activity does not validate or filter the incoming URI before using it as the outgoing attachment, so a caller can pass a file:// URI pointing at the application's own internal storage (for example /data/data/chat.revolt/databases/revolt.db, cached authentication token files, or preferences) and have the app treat that internal file as a user-selected attachment. An attacker who can invoke intents on the victim's device (via ADB access, a co-installed malicious application, or any other route that reaches Android's intent dispatch) can launch ShareTargetActivity with such a URI and cause the victim, on a single channel-selection interaction, to send the internal file to any Stoat channel or user of the attacker's choosing. The composer displays the attachment as \"attachment\" with no filename indication, so the victim has no visible signal that the file being sent is their own internal application data. Consequences include disclosure of the local Stoat database (message history, contact list, cached content), disclosure of authentication tokens permitting full account takeover, and disclosure of any other file readable by the app process.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS