CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2025-49810
Medium (4.3) in mattermost mattermost server. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 10.5.9, 10.5.9+incompatible.
Mattermost versions 10.5.x <= 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 10% 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-pwvr-grqg-7vp2 | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.9 | 10.5.9 |
| GHSA-pwvr-grqg-7vp2 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250721095846-c602a4a78e1f | 8.0.0-20250721095846-c602a4a78e1f |
| GO-2025-3903 | Go | github.com/mattermost/mattermost-server | >=10.5.0+incompatible <10.5.9+incompatible | 10.5.9+incompatible |
| GO-2025-3903 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3903 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3903 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250721095846-c602a4a78e1f | 8.0.0-20250721095846-c602a4a78e1f |