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Not in CISA KEV
LOW severity

Mattermost Desktop App allows the bypass of Transparency, Consent, and Control (TCC) via code injectionGHSA-xmvv-w44w-j8wx

LOW

GHSA-xmvv-w44w-j8wx is a low-severity (CVSS 3.3) CWE-426 vulnerability in mattermost-desktop. A fix is available for mattermost-desktop — see the affected versions and patch details below.

Also known asCVE-2025-1398
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-xmvv-w44w-j8wx.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs7th percentile — riskier than 7% of all scored CVEsHighest risk
0.00%0.22%0.45%0.67%0.0%0.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
mattermost-desktopnpm
25downloads / week

Description

Mattermost Desktop App versions <=5.10.0 explicitly declared unnecessary macOS entitlements which allows an attacker with remote access to bypass Transparency, Consent, and Control (TCC) via code injection.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmmattermost-desktopall versions5.11.0npm install mattermost-desktop@5.11.0

Affected Products

1 product · 1 configurations
Application
mattermost desktopmattermost
< 5.11.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mattermost-desktop, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update mattermost-desktop to 5.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xmvv-w44w-j8wx is resolved across your whole dependency graph.

  3. Workarounds

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

Mattermost Desktop App versions <=5.10.0 explicitly declared unnecessary macOS entitlements which allows an attacker with remote access to bypass Transparency, Consent, and Control (TCC) via code injection.
O3 Security · Impact-Aware SCA

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