CVE-2025-55073 in Mattermost

Résumé

par MITRE • 14/11/2025

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.

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• Responsable: Mattermost
• Réserver: 15/10/2025
• Divulgation: 14/11/2025
• Modérer: accepté
• Entrée: VDB-332461
• CPE: prêt
• CWE: CWE-306 (confirmé)
• CVSS: 5.3 (NVD)
• EPSS: 0.00179
• KEV: non
• Activités: très faible
• Secteur: Hospital, Chemical, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2025-55073
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55073
• CVE Details: https://www.cvedetails.com/cve/CVE-2025-55073/