CVE-2025-2564
Unauthorized View Access to Archived Channel Member Info
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Unauthorized View Access to Archived Channel Member Info
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
CVE-2025-2564- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2025-11461
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
EUVD-2025-11461- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mj2p-v2c2-vh4v
Mattermost Incorrect Authorization vulnerability
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
GHSA-mj2p-v2c2-vh4v- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
CVE-2025-2564- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
Unauthorized View Access to Archived Channel Member Info
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
CVE-2025-2564- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-mj2p-v2c2-vh4v
Mattermost Incorrect Authorization vulnerability
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
- Record
GHSA-mj2p-v2c2-vh4v- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGO-2025-3623 No score
Mattermost Incorrect Authorization vulnerability in github.com/mattermost/mattermost-server
Mattermost Incorrect Authorization vulnerability in github.com/mattermost/mattermost-server
- Record
GO-2025-3623- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:15017-1 No score
govulncheck-vulndb-0.0.20250422T181640-1.1 on GA media
These are all security issues fixed in the govulncheck-vulndb-0.0.20250422T181640-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:15017-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/mattermost/mattermost/server/v8Go |
10.5.0 up to 10.5.2 | 10.5.2 |
github.com/mattermost/mattermost/server/v8Go |
10.4.0 up to 10.4.4 | 10.4.4 |
github.com/mattermost/mattermost/server/v8Go |
9.11.0 up to 9.11.10 | 9.11.10 |
github.com/mattermost/mattermost/server/v8Go |
before 8.0.0-20250314142426-c049748b8863 | 8.0.0-20250314142426-c049748b8863 |
github.com/mattermost/mattermost-serverGo |
9.11.0+incompatible up to 9.11.10+incompatible, 10.4.0+incompatible up to 10.4.4+incompatible, 10.5.0+incompatible up to 10.5.2+incompatible | 9.11.10+incompatible10.4.4+incompatible10.5.2+incompatible |
github.com/mattermost/mattermost-server/v5Go |
All versions | None known |
github.com/mattermost/mattermost-server/v6Go |
All versions | None known |
govulncheck-vulndbopenSUSE:Tumbleweed From an advisory covering 23 CVEs |
before 0.0.20250422T181640-1.1 | 0.0.20250422T181640-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-2564 is a medium vulnerability (CVSS 4.3) in Mattermost, published April 16, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. Fixed in github.com/mattermost/mattermost/server/v8 10.5.2.
References
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2025-2564
github.com/advisories/GHSA-mj2p-v2c2-vh4v
lists.opensuse.org/archives/list/[email protected]/thread/XCF7AZBKQYAQXK32J6F54H6NREFBK2V7
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suse.com/security/cve/CVE-2019-15119