PT-2026-115515 · Mattermost · Mattermost
CVSS v3.1
4.5
Medium
| Vector | AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N |
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to sanitize authentication tokens before writing them to server log entries, which allows an attacker with access to server logs to obtain valid session tokens or OAuth access tokens and impersonate authenticated users via the debug-level Mattermost server log.. Mattermost Advisory ID: MMSA-2026-00763
Fix
Insertion into Log File
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost