CVE-2025-9081 json
IDOR in board file download allows any user to download any file by UUID
published 2025-09-19 13 mo ago modified 2026-10-19 20 d ago also GHSA-f72g-52v7-mg3p , GO-2025-3978 , EUVD-2025-30247
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration
Patch / fix
- go github.com/mattermost/mattermost-plugin-boards 0.0.0-20250716054606-3f3e3becfe1d
- go github.com/mattermost/mattermost/server/v8 8.0.0-20250721095935-11c36f4d1e44
- go github.com/mattermost/mattermost-server 9.11.18, 9.11.18+incompatible, 10.5.9, 10.5.9+incompatible
- Mattermost Mattermost 9.11.18, 10.5.9, 10.11.0
- govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20251023T162509-150000.1.110.1
suse advisories SUSE-SU-2025:3799-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250924T192141-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15576-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 13 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-boards | <0.0.0-20250716054606-3f3e3becfe1d |
0.0.0-20250716054606-3f3e3becfe1d |
| go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250721095935-11c36f4d1e44 |
8.0.0-20250721095935-11c36f4d1e44 |
| go | github.com/mattermost/mattermost-server | >=10.5.0-rc1, <10.5.9 >=9.11.0-rc1, <9.11.18 >=9.11.0-rc1+incompatible, <9.11.18+incompatible >=10.5.0-rc1+incompatible, <10.5.9+incompatible |
10.5.9 9.11.18 9.11.18+incompatible 10.5.9+incompatible |
| go | github.com/mattermost/mattermost-server/v5 | all versions |
no fix listed |
| go | github.com/mattermost/mattermost-server/v6 | all versions |
no fix listed |
Affected products
- Mattermost Mattermost
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/mattermost/mattermost-plugin-boards/pull/114
web, patch
-
github.com
/mattermost/mattermost-plugin-boards/commit/3f3e3becfe1d66db0d0f4fd235f04afd6e1ec40b
web, patch
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-9081
advisory
-
github.com
/mattermost/mattermost-plugin-boards
package
-
pkg.go.dev
/vuln/GO-2025-3978
web
-
github.com
/advisories/GHSA-f72g-52v7-mg3p
advisory
Sources
- CVE List CVE-2025-9081
- GitHub Advisory GHSA-f72g-52v7-mg3p
- NVD CVE-2025-9081
- OSV GO-2025-3978
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.