Channel export permitted on archived channel when viewing archived channels is disabled
Priority LOW 20CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
Mattermost versions 10.1.x <= 10.1.3, 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to restrict channel export of archived channels when the "Allow users to view archived channels" is disabled which allows a user to export channel contents when they shouldn't have access to it
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00294 22nd percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 10.5.0, 10.1.4, 10.4.2 +3github.com/mattermost/mattermost/server/v8 (Go): 8.0.0-20250110161910-96195f1bd746, 9.11.8, 10.2.3 +2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | 10.1.0 – 10.1.3; 10.4.0 – 10.4.1; 9.11.0 – 9.11.7; 10.3.0 – 10.3.2; 10.2.0 – 10.2.2 | 10.5.0, 10.1.4, 10.4.2, 9.11.8, 10.3.3, 10.2.3 | Patch available | CNA |
| — | github.com/mattermost/mattermost/server/v8 (Go) | before 8.0.0-20250110161910-96195f1bd746 | 8.0.0-20250110161910-96195f1bd746 | Patch available | GHSA-q8p2-2hwc-jw64 |
| — | github.com/mattermost/mattermost/server/v8 (Go) | 9.11.0-rc1 to before 9.11.8 | 9.11.8 | Patch available | GHSA-q8p2-2hwc-jw64 |
| — | github.com/mattermost/mattermost/server/v8 (Go) | 10.2.0-rc1 to before 10.2.3 | 10.2.3 | Patch available | GHSA-q8p2-2hwc-jw64 |
| — | github.com/mattermost/mattermost/server/v8 (Go) | 10.3.0-rc1 to before 10.3.3 | 10.3.3 | Patch available | GHSA-q8p2-2hwc-jw64 |
| — | github.com/mattermost/mattermost/server/v8 (Go) | 10.4.0-rc1 to before 10.4.2 | 10.4.2 | Patch available | GHSA-q8p2-2hwc-jw64 |
- Mattermost VendorMattermost Affected 10.1.0 – 10.1.3; 10.4.0 – 10.4.1; 9.11.0 – 9.11.7; 10.3.0 – 10.3.2; 10.2.0 – 10.2.2 Fixed in 10.5.0, 10.1.4, 10.4.2, 9.11.8, 10.3.3, 10.2.3 Patch available CNA
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.0.0-20250110161910-96195f1bd746 Fixed in 8.0.0-20250110161910-96195f1bd746 Patch available GHSA-q8p2-2hwc-jw64
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 9.11.0-rc1 to before 9.11.8 Fixed in 9.11.8 Patch available GHSA-q8p2-2hwc-jw64
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 10.2.0-rc1 to before 10.2.3 Fixed in 10.2.3 Patch available GHSA-q8p2-2hwc-jw64
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 10.3.0-rc1 to before 10.3.3 Fixed in 10.3.3 Patch available GHSA-q8p2-2hwc-jw64
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 10.4.0-rc1 to before 10.4.2 Fixed in 10.4.2 Patch available GHSA-q8p2-2hwc-jw64
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | 9.11.0 to before 9.11.8; 10.1.0 to before 10.1.4; 10.2.0 to before 10.2.3; 10.3.0 to before 10.3.3; 10.4.0 to before 10.4.2 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 9.11.0 to before 9.11.8; 10.1.0 to before 10.1.4; 10.2.0 to before 10.2.3; 10.3.0 to before 10.3.3; 10.4.0 to before 10.4.2 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 10.5.0, 10.1.4, 10.4.2, 9.11.8, 10.3.3, 10.2.3
- Fix · GHSA-q8p2-2hwc-jw64 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.0.0-20250110161910-96195f1bd746 Advisory →
- Fix · GHSA-q8p2-2hwc-jw64 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 9.11.8 Advisory →
- Fix · GHSA-q8p2-2hwc-jw64 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 10.2.3 Advisory →
- Fix · GHSA-q8p2-2hwc-jw64 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 10.3.3 Advisory →
- Fix · GHSA-q8p2-2hwc-jw64 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 10.4.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-24526
- 2026-10-03 Alias added: GHSA-q8p2-2hwc-jw64
References
Other 4
- https://github.com/mattermost/mattermost-plugin-channel-export/issues/51
- https://github.com/mattermost/mattermost-plugin-channel-export/commit/3c052b66207fb734bfc4c948941e7f7522a82550
- https://github.com/mattermost/mattermost/commit/96195f1bd7467f572525c35b5087acaeb53daa63
- https://github.com/mattermost/mattermost
More Mattermost Server vulnerabilities
- TI-2025-18933 Arbitrary file read in Mattermost Boards via import & export board archive CVSS 3.1CRITICAL 9.9
- TI-2025-04465 Path Traversal Leading to RCE by Any Authenticated Mattermost User CVSS 3.1CRITICAL 9.9
- TI-2017-14068 An issue was discovered in Mattermost Server before 3.6.2. CVSS 3.1CRITICAL 9.8
- TI-2017-14060 An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. CVSS 3.1CRITICAL 9.8
- TI-2017-14048 An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. CVSS 3.1CRITICAL 9.8
- TI-2025-14360 Arbitrary file read via block duplication in Mattermost Boards CVSS 3.1CRITICAL 9.9
Sources
- CVE-2025-24526 · CVE Program
- CVE-2025-24526 · NVD
- FIRST EPSS
- GHSA-q8p2-2hwc-jw64 · GitHub Advisory Database · CC BY 4.0
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