NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
📦
📦 npm
Not in CISA KEV
LOW severity

CVE-2024-39772 — mattermost-desktop

LOW

CVE-2024-39772 is a low-severity (CVSS 3.7) CWE-284 vulnerability in mattermost-desktop. A fix is available for mattermost-desktop — see the affected versions and patch details below.

Silent Desktop Screenshot Capture

Also known asBIT-mattermost-2024-39772GHSA-5777-rcjj-9p22
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 6, 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 CVE-2024-39772.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs24th percentile — riskier than 24% of all scored CVEsHighest risk
0.00%0.29%0.57%0.86%0.4%0.3%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 <=5.8.0 fail to safeguard screen capture functionality which allows an attacker to silently capture high-quality screenshots via JavaScript APIs.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmmattermost-desktopall versions5.9.0npm install mattermost-desktop@5.9.0

Affected Products

1 product · 1 configurations
Application
mattermost desktopmattermost
< 5.9.0
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 5.9.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-39772 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Mattermost Desktop App versions <=5.8.0 fail to safeguard screen capture functionality which allows an attacker to silently capture high-quality screenshots via JavaScript APIs.
O3 Security · Impact-Aware SCA

Is CVE-2024-39772 in your dependencies?

Find it across npm, including transitive dependencies.

Scan my dependencies How O3 SCA works
CVE-2024-39772: mattermost-desktop — Fixed in 5.9.0