https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-08T10:53:05.169137+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2025-11777 CVE-2025-11777 — Cross-team channel membership access 2026-10-08T10:53:05.187504+00:00

Affected: Mattermost

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint