CVE-2025-3611 json
Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions
published last yr. modified 3mo ago also GHSA-86jg-35xj-3vv5 , GO-2025-3728 , EUVD-2025-16492
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.0.0-20250414154356-6f33b721de76, 9.11.13, 10.5.4, 10.7.1
- go github.com/mattermost/mattermost-server 9.11.13+incompatible, 10.5.4+incompatible, 10.7.1+incompatible
- Mattermost Mattermost 9.11.13, 10.5.4, 10.7.1, 10.8.0
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250612T141001-1.1
opensuse advisories openSUSE-SU-2025:15225-1
Is CVE-2025-3611 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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/server/v8 | >=10.6.0-rc1, <10.7.1 >=10.0.0-rc1, <10.5.4 >=9.0.0-rc1, <9.11.13 <8.0.0-20250414154356-6f33b721de76 |
10.7.1 10.5.4 9.11.13 8.0.0-20250414154356-6f33b721de76 |
| go | github.com/mattermost/mattermost-server | >=9.0.0-rc1+incompatible, <9.11.13+incompatible >=10.0.0-rc1+incompatible, <10.5.4+incompatible >=10.6.0-rc1+incompatible, <10.7.1+incompatible |
9.11.13+incompatible 10.5.4+incompatible 10.7.1+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-863 Incorrect Authorization
References
Sources
- CVE List CVE-2025-3611
- GitHub Advisory GHSA-86jg-35xj-3vv5
- NVD CVE-2025-3611
- OSV GO-2025-3728
Fencer Intel 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.