Mattermost Playbooks allows privilege escalation through improper access control in playbook run participant management
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 0.0.0-20250513065225-4ae5d647fb88, 8.0.0-20250513065225-4ae5d647fb88, 9.11.16, 10.5.6, 10.6.6, and 7 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 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions when adding participants to playbook runs. This allows authenticated users with member-level permissions to bypass system admin restrictions and add or remove users to/from private channels via the playbook run participants feature, even when the 'Manage Members' permission has been explicitly removed. This can lead to unauthorized access to sensitive channel content and allow guest users to gain channel management privileges.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 10.5.0 · through 10.5.5; From 9.11.0 · through 9.11.15; From 10.7.0 · through 10.7.2; From 10.6.0 · through 10.6.5
- github.com/mattermost/mattermost-serverGo
fixed in 0.0.0-20250513065225-4ae5d647fb88
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.0.0-20250513065225-4ae5d647fb88
- github.com/mattermost/mattermost/server/v8Go
From 9.11.0 · fixed in 9.11.16
- github.com/mattermost/mattermost/server/v8Go
From 10.5.0 · fixed in 10.5.6
- github.com/mattermost/mattermost/server/v8Go
From 10.6.0 · fixed in 10.6.6
- github.com/mattermost/mattermost/server/v8Go
From 10.7.0 · fixed in 10.7.3
- github.com/mattermost/mattermost/server/v8Go
From 10.8.0 · fixed in 10.8.1
- github.com/mattermost/mattermost-serverGo
fixed in 0.0.0-20250513065225-4ae5d647fb88; From 9.11.0+incompatible · fixed in 9.11.16+incompatible; From 10.5.0+incompatible · fixed in 10.5.6+incompatible; From 10.6.0+incompatible · fixed in 10.6.6+incompatible; From 10.7.0+incompatible · fixed in 10.7.3+incompatible; From 10.8.0+incompatible · fixed in 10.8.1+incompatible
- github.com/mattermost/mattermost-server/v5Go
All versions
- github.com/mattermost/mattermost-server/v6Go
All versions