GitLab Plugin Allows Non-Admin Users to Modify Default Instance Configuration
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 10.11.18+incompatible, 11.5.6+incompatible, 11.6.3+incompatible, 11.7.1+incompatible, 11.7.1, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to enforce administrator authorization on the {{setDefaultInstance}} call within the {{/gitlab connect}} command handler, which allows any authenticated user to overwrite the global default GitLab instance configuration via the {{/gitlab connect <instance-name>}} slash command.. Mattermost Advisory ID: MMSA-2026-00644
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 11.7.0 · through 11.7.0; From 11.6.0 · through 11.6.2; From 11.5.0 · through 11.5.5; From 10.11.0 · through 10.11.17
- github.com/mattermost/mattermost-serverGo
From 10.11.0+incompatible · fixed in 10.11.18+incompatible; From 11.5.0+incompatible · fixed in 11.5.6+incompatible; From 11.6.0+incompatible · fixed in 11.6.3+incompatible; From 11.7.0+incompatible · fixed in 11.7.1+incompatible
- github.com/mattermost/mattermost-serverGo
From 11.7.0 · fixed in 11.7.1
- github.com/mattermost/mattermost-serverGo
From 11.6.0 · fixed in 11.6.3
- github.com/mattermost/mattermost-serverGo
From 11.5.0 · fixed in 11.5.6
- github.com/mattermost/mattermost-serverGo
From 10.11.0 · fixed in 10.11.18