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Mattermost fails to properly restrict access to archived channel search API

🗓️ 14 Nov 2025 09:30:27Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 27 Views

Mattermost under eleven exposes archived channel search to guests via /api/v4/teams/{team_id}/channels/search_archived.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
Mattermost API Data Compromise
17 Dec 202500:00
–bdu_fstec
circl
Circl
CVE-2025-11776
14 Nov 202509:08
–circl
cnnvd
CNNVD
Mattermost security vulnerabilities
14 Nov 202500:00
–cnnvd
cve
CVE
CVE-2025-11776
14 Nov 202507:58
–cve
cvelist
Cvelist
CVE-2025-11776 Guest user can discover archived public channels
14 Nov 202507:58
–cvelist
euvd
EUVD
EUVD-2025-186558
14 Nov 202509:30
–euvd
nessus
Tenable Nessus
Mattermost Server < 11.0.0 Multiple Vulnerabilities (MMSA-2024-00337, MMSA-2025-00493, MMSA-2025-00540)
20 Nov 202500:00
–nessus
mend
Mend
CVE-2025-11776
14 Nov 202507:58
–mend
nvd
NVD
CVE-2025-11776
14 Nov 202508:15
–nvd
osv_cve
osv_cve
CVE-2025-11776
14 Nov 202508:15
–osv_cve
Rows per page
Vulners
Node
OR
mattermostmattermost-serverRange<5.3.2-0.20250815165020-c8d66301415dgo
mattermostmattermost-serverRange<5.3.2-0.20250815165020-c8d66301415dgo
mattermostmattermost-serverRange<5.3.2-0.20250815165020-c8d66301415dgo
mattermostmattermostRange<5.3.2-0.20250815165020-c8d66301415dgo
mattermostmattermostRange<8.0.0-20250815165020-c8d66301415dgo

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14 Nov 2025 22:08Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.14.3
EPSS0.00208
SSVC
27