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Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw
| Reporter | Title | Published | Views | Family All 13 |
|---|---|---|---|---|
 | CVE-2026-27656 | 25 Mar 202616:28 | – | attackerkb |
 | CVE-2026-27656 | 26 Mar 202603:00 | – | circl |
| CVE-2026-27659 | 25 Mar 202618:08 | – | circl |
 | Mattermost 安全漏洞 | 25 Mar 202600:00 | – | cnnvd |
 | CVE-2026-27656 | 25 Mar 202616:28 | – | cve |
 | CVE-2026-27656 Account Takeover via Substring Matching in OpenID Connect Authentication | 25 Mar 202616:28 | – | cvelist |
 | EUVD-2026-15805 | 25 Mar 202618:31 | – | euvd |
 | CVE-2026-27656 | 25 Mar 202617:16 | – | nvd |
 | GHSA-FG35-5RF6-QG3G Mattermost allows attackers to take over arbitrary user accounts via overly permissive substring matching flaw | 25 Mar 202618:31 | – | osv |
 | PT-2026-27989 | 25 Mar 202600:00 | – | ptsecurity |
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31 Mar 2026 05:19Current
6Medium risk
Vulners AI Score6
CVSS 3.15.7 - 6.1
EPSS0.00037
SSVC