CVE-2026-20796
Time-of-check time-of-use vulnerability in common teams API
Résumé
Time-of-check time-of-use vulnerability in common teams API
Description d'origine
La description telle que publiée par la source (souvent en anglais).
Mattermost versions 10.11.x <= 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /common_teams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Références
- advisory github.com
- advisory mattermost.com
- advisory nvd.nist.gov