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Mattermost fails to validate user's authentication method when processing account auth type switch

🗓️ 16 Mar 2026 15:30:47Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 30 Views

Mattermost 10.11.x to 10.11.10 fails to validate auth method during account switch.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-22545
16 Mar 202614:54
–attackerkb
bdu_fstec
BDU FSTEC
Mattermost Auth Bypass
13 May 202600:00
–bdu_fstec
cnnvd
CNNVD
Mattermost security vulnerabilities
16 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-22545
16 Mar 202614:54
–cve
cvelist
Cvelist
CVE-2026-22545 Password Change Bypass via Auth Switch Endpoint
16 Mar 202614:54
–cvelist
euvd
EUVD
EUVD-2026-12439
16 Mar 202615:30
–euvd
mend
Mend
CVE-2026-22545
16 Mar 202614:54
–mend
nvd
NVD
CVE-2026-22545
16 Mar 202615:16
–nvd
osv_cve
osv_cve
CVE-2026-22545 Password Change Bypass via Auth Switch Endpoint
16 Mar 202614:54
–osv_cve
osv_ghsa
osv_ghsa
GHSA-RV67-7W2G-7976 Mattermost fails to validate user's authentication method when processing account auth type switch
16 Mar 202615:30
–osv_ghsa
Rows per page
Vulners
Node
OR
mattermostmattermost-serverRange11.3.0-rc1–11.3.1go
mattermostmattermost-serverRange11.2.0-rc1–11.2.3go
mattermostmattermost-serverRange10.11.0-rc1–10.11.11go
mattermostmattermost-serverRange<5.3.2-0.20260127144908-ced9a56e3988go
mattermostmattermostRange<8.0.0-20260127144908-ced9a56e3988go

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19 Mar 2026 19:25Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.13.1 - 3.5
EPSS0.00151
SSVC
30