https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-09-30T16:41:51.990504+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/cve-2026-4055 CVE-2026-4055 — Insufficient permission validation on cross-team playbook run creation 2026-09-30T16:41:51.999652+00:00

Affected: Mattermost

Mattermost versions 11.5.x <= 11.5.1 fail to validate team-level run_create permission against the target team when creating a playbook run which allows an authenticated team member to create runs in teams where they lack permission via specifying a different team ID in the run creation API request. Mattermost Advisory ID: MMSA-2026-00629