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CVE-2025-11776 Guest user can discover archived public channels

🗓️ 14 Nov 2025 07:58:52Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 42 Views

Guest users can reveal archived public channels via the archived search endpoint in Mattermost versions below eleven.

Related
Affected
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
euvd
EUVD
EUVD-2025-186558
14 Nov 202509:30
–euvd
github
Github Security Blog
Mattermost fails to properly restrict access to archived channel search API
14 Nov 202509:30
–github
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
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "<11",
        "status": "affected",
        "version": "<11",
        "versionType": "semver"
      },
      {
        "version": "11.0.0",
        "status": "unaffected"
      }
    ]
  }
]

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