CVE-2026-75025CWE-346

CVE-2026-75025

Medium · published September 16, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
4.3
In the wild
Unconfirmed
What it is

Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00155 · 4.3th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-09-16T23:17Z
Affected products (1)
ProductVersionsFixed in
mattermost/mattermost_desktop≥ 6.2.0, < 6.2.36.2.3
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 18 SEP 04:01Z
    EPSS moved — → 0%
    epss
  • 16 SEP 18:27Z
    Mattermost Desktop local network access from server-rendered content
    cvelistv5