CVE-2025-12689 (GCVE-0-2025-12689)

Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI?
Title
DoS in Calls plugin via malformed UTF-8 in WebSocket request
Summary
Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 11.0.0 , ≤ 11.0.4 (semver)
Affected: 10.12.0 , ≤ 10.12.2 (semver)
Affected: 10.11.0 , ≤ 10.11.6 (semver)
Unaffected: 11.1.0
Unaffected: 11.0.5
Unaffected: 10.12.3
Unaffected: 10.11.7
Create a notification for this product.
Credits
National Security Agency
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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