CVE-2025-13767
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.
- CVSS 3.1
- 4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-25)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fmqf-pmcm-8cx9 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20251121122154-b57c297c6d7 | 8.0.0-20251121122154-b57c297c6d7 |
| GHSA-fmqf-pmcm-8cx9 | Go | github.com/mattermost/mattermost-server | >=10.11.0 <10.11.8 | 10.11.8 |
| GHSA-fmqf-pmcm-8cx9 | Go | github.com/mattermost/mattermost-server | >=10.12.0 <10.12.4 | 10.12.4 |
| GHSA-fmqf-pmcm-8cx9 | Go | github.com/mattermost/mattermost-server | >=11.0.0 <11.0.6 | 11.0.6 |
| GHSA-fmqf-pmcm-8cx9 | Go | github.com/mattermost/mattermost-server | >=11.1.0 <11.1.1 | 11.1.1 |
| GO-2025-4259 | Go | github.com/mattermost/mattermost-server | >=10.11.0+incompatible <10.11.8+incompatible >=10.12.0+incompatible <10.12.4+incompatible >=11.0.1+incompatible <11.0.6+incompatible >=11.1.0+incompatible <11.1.1+incompatible | 10.11.8+incompatible, 10.12.4+incompatible, 11.0.6+incompatible, 11.1.1+incompatible |
| GO-2025-4259 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-4259 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-4259 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |