{"$ref":"https://www.cert.ssi.gouv.fr/openapi.json","affected_systems":[{"description":"Mattermost Server versions 11.8.x ant\u00e9rieures \u00e0 11.8.5","product":{"name":"Mattermost Server","vendor":{"name":"Mattermost","scada":false}}},{"description":"Mattermost Server versions 11.7.x ant\u00e9rieures \u00e0 11.7.8","product":{"name":"Mattermost Server","vendor":{"name":"Mattermost","scada":false}}},{"description":"Mattermost Server versions 11.9.x ant\u00e9rieures \u00e0 11.9.1","product":{"name":"Mattermost Server","vendor":{"name":"Mattermost","scada":false}}}],"affected_systems_content":"","content":"## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l'\u00e9diteur pour l'obtention des correctifs (cf. section Documentation).","cves":[{"name":"CVE-2026-12985","url":"https://www.cve.org/CVERecord?id=CVE-2026-12985"},{"name":"CVE-2026-82920","url":"https://www.cve.org/CVERecord?id=CVE-2026-82920"}],"links":[],"reference":"CERTFR-2026-AVI-1098","revisions":[{"description":"Version initiale","revision_date":"2026-09-01T00:00:00.000000"},{"description":"Ajout des identifiants CVE, modification des risques en cons\u00e9quence.","revision_date":"2026-09-15T00:00:00.000000"}],"risks":[{"description":"Contournement de la politique de s\u00e9curit\u00e9"}],"summary":"De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Mattermost Server. Elles permettent \u00e0 un attaquant de provoquer un contournement de la politique de s\u00e9curit\u00e9.","title":"Multiples vuln\u00e9rabilit\u00e9s dans Mattermost Server","vendor_advisories":[{"published_at":"2026-08-31","title":"Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00724","url":"https://mattermost.com/security-updates/"},{"published_at":"2026-08-31","title":"Bulletin de s\u00e9curit\u00e9 Mattermost MMSA-2026-00700","url":"https://mattermost.com/security-updates/"}]}