CVE-2026-4053
LOW
NVD
CVSS Score
3.1
Severity
LOW
Published
May 15, 2026
Vendor
unknown
Description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to enforce the PostEditTimeLimit on non-message post fields which allows an authenticated user to modify post file attachments, props, and pin status after the edit window has expired via the post patch and update API endpoints.. Mattermost Advisory ID: MMSA-2026-00631