GO-2026-4275
NoneCVSS
—
EPSS
—
Published
Jan 12, 2026
CISA due date
—
The record
Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-plugin-jira | 0 | No fix |
| Go | github.com/mattermost/mattermost-plugin-jira | 0 | 4.4.1 |
| Go | github.com/mattermost/mattermost-server | 0 | No fix |
| Go | github.com/mattermost/mattermost-server/v5 | 0 | No fix |
| Go | github.com/mattermost/mattermost-server/v6 | 0 | No fix |
| Go | github.com/mattermost/mattermost/server/v8 | 0 | 8.0.0-20251121122154-b57c297c6d7a |
Related vulnerabilities
- CVE-2025-14273 Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication… Same vulnerability
- GO-2026-4305 Mattermost Server vulnerable to CSRF if CORS is enabled in… Also affects github.com/mattermost/mattermost-server
- GO-2025-4259 Mattermost doesn't validate user channel membership when attaching Mattermost posts as… Also affects github.com/mattermost/mattermost-server
- GO-2026-4326 Mattermost is vulnerable to DoS due to infinite re-renders on API errors in… Also affects github.com/mattermost/mattermost-server
- GO-2025-4260 Mattermost doesn't verify that post actions invoking `/share-issue-publicly` were created… Also affects github.com/mattermost/mattermost-server
- GO-2026-4325 Mattermost is vulnerable to CPU exhaustion via crafted HTTP request in… Also affects github.com/mattermost/mattermost-server
- GO-2026-4282 Mattermost Server is vulnerable to channel invisibility DoS via misformatted post in… Also affects github.com/mattermost/mattermost-server
- GO-2026-4496 Mattermost doesn't validate user permissions when creating Jira issues from Mattermost… Also affects github.com/mattermost/mattermost-server