CVE-2026-22880 (GCVE-0-2026-22880)
Vulnerability from cvelistv5
Published
2026-05-21 08:22
Modified
2026-05-21 12:39
Severity ?
6.1 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
CWE
  • CWE-352 - Cross-Site Request Forgery (CSRF)
Summary
Mattermost Mobile Apps versions <=2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO code exchange flow through the mobile application. Mattermost Advisory ID: MMSA-2025-00564
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 0   ≤ 2.0.37
Version: 0   ≤ 11.0.4
Version: 0   ≤ 11.1.3
Version: 0   ≤ 11.3.2
Version: 0   ≤ 10.11.11
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
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