CVE-2025-3227 json
Unauthorized channel member management through playbook runs
published last yr. modified 4mo ago also GHSA-qwwm-c582-82rx , GO-2025-3772 , EUVD-2025-18758
- cvss
- 4.3
- 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 15%
- public exploits
- 0
- none known
Summary
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.
Patch / fix
- go github.com/mattermost/mattermost-server 0.0.0-20250520060012-d0380305ef7a, 9.11.16+incompatible, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible
- go github.com/mattermost/mattermost/server/v8 8.0.0-20250520060012-d0380305ef7a, 9.11.16, 10.5.6, 10.6.6, 10.7.3, 10.8.1
- Mattermost Mattermost 9.11.16, 10.5.6, 10.6.6, 10.7.3, 10.8.1, 10.9.0
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250730T213748-1.1
opensuse advisories openSUSE-SU-2025:15405-1
Is CVE-2025-3227 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
0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/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:N/I:L/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/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 | <0.0.0-20250520060012-d0380305ef7a >=9.11.0+incompatible, <9.11.16+incompatible >=10.5.0+incompatible, <10.5.6+incompatible >=10.6.0+incompatible, <10.6.6+incompatible >=10.7.0+incompatible, <10.7.3+incompatible >=10.8.0+incompatible, <10.8.1+incompatible |
0.0.0-20250520060012-d0380305ef7a 9.11.16+incompatible 10.5.6+incompatible 10.6.6+incompatible 10.7.3+incompatible 10.8.1+incompatible |
| go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250520060012-d0380305ef7a >=10.5.0, <10.5.6 >=9.11.0, <9.11.16 >=10.8.0, <10.8.1 >=10.7.0, <10.7.3 >=10.6.0, <10.6.6 |
8.0.0-20250520060012-d0380305ef7a 10.5.6 9.11.16 10.8.1 10.7.3 10.6.6 |
| 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
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-3227
advisory
-
github.com
/mattermost/mattermost
package
-
github.com
/advisories/GHSA-qwwm-c582-82rx
advisory
Sources
- CVE List CVE-2025-3227
- GitHub Advisory GHSA-qwwm-c582-82rx
- NVD CVE-2025-3227
- OSV GO-2025-3772
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.