CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2025-2527
Medium (4.3) in mattermost mattermost server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 10.5.3, 8.0.0-20250411064244-844447fbd57c, 9.11.12.
Mattermost versions 10.5.x <= 10.5.2, 9.11.x <= 9.11.11 failed to properly verify a user's permissions when accessing groups, which allows an attacker to view group information via an API request.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-h356-3mfw-x368 | Go | github.com/mattermost/mattermost/server/v8 | >=10.5.0 <10.5.3 | 10.5.3 |
| GHSA-h356-3mfw-x368 | Go | github.com/mattermost/mattermost/server/v8 | >=9.11.0 <9.11.12 | 9.11.12 |
| GHSA-h356-3mfw-x368 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250411064244-844447fbd57c | 8.0.0-20250411064244-844447fbd57c |
| GO-2025-3691 | Go | github.com/mattermost/mattermost-server | >=9.11.0+incompatible <9.11.12+incompatible >=10.5.0+incompatible <10.5.3+incompatible | 9.11.12+incompatible, 10.5.3+incompatible |
| GO-2025-3691 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3691 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3691 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250411064244-844447fbd57c | 8.0.0-20250411064244-844447fbd57c |