CVE-2025-12756

MediumCVSS 4.3/10Last modified Oct 19, 2026

Description

Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate user permissions when deleting comments in Boards, which allows an authenticated user with the editor role to delete comments created by other users.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-863

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= 11.0.0, <= 11.0.2; >= 10.12.0, <= 10.12.1; >= 10.11.0, <= 10.11.4; >= 10.5.0, <= 10.5.12

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Dec 1, 2025
Last modified: Oct 19, 2026
NVD status: Analyzed

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