# CVE-2026-57848 — stoatchat Stoat for Android

> As of 2026-07-18, CVE-2026-57848 is a MEDIUM-severity vulnerability in stoatchat Stoat for Android, CVSS v3.1 5.5, EPSS 0.1% (4.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-57848 as of 2026-07-18; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-18

## What is CVE-2026-57848?

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.

The record classifies CVE-2026-57848 under weakness class [CWE-926](https://cwe.mitre.org/data/definitions/926.html). Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 79 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.5 — MEDIUM (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **CVSS v4.0 base score:** 6.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 4.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-18

## Is CVE-2026-57848 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **stoatchat**: Stoat for Android

## How to fix CVE-2026-57848

No vendor patch reference has been recorded for CVE-2026-57848 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-57848

No threat campaign in the Threadlinqs corpus currently references CVE-2026-57848, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-20. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/stoatchat/for-android/commit/50d5f5143940809ebb5a61e5f507c956c33aa970)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/stoat-for-android-internal-file-disclosure-via-exported-sharetargetactivity-uri-validation)

**Issue tracking and product pages**

- [github.com — product](https://github.com/stoatchat/for-android)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-57848
Full detection coverage and IOCs for threats exploiting CVE-2026-57848 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp