CVE-2025-27933GO-2025-3556BIT-MATTERMOST-2025-27933GHSA-H5V9-XW2G-7HRQ
Unauthorized Private-to-Public Channel Conversion
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 9.11.9+incompatible, 10.3.4+incompatible, 10.4.3+incompatible, 8.0.0-20250218135018-e644e3c8e393, 10.4.3, and 2 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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8 fail to fail to enforce channel conversion restrictions, which allows members with permission to convert public channels to private ones to also convert private ones to public
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 10.4.0 · through 10.4.2; From 10.3.0 · through 10.3.3; From 9.11.0 · through 9.11.8
- github.com/mattermost/mattermost-serverGo
From 9.11.0+incompatible · fixed in 9.11.9+incompatible; From 10.3.0+incompatible · fixed in 10.3.4+incompatible; From 10.4.0+incompatible · fixed in 10.4.3+incompatible
- github.com/mattermost/mattermost-server/v5Go
All versions
- github.com/mattermost/mattermost-server/v6Go
All versions
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.0.0-20250218135018-e644e3c8e393
- github.com/mattermost/mattermost/server/v8Go
From 10.4.0 · fixed in 10.4.3
- github.com/mattermost/mattermost/server/v8Go
From 10.3.0 · fixed in 10.3.4
- github.com/mattermost/mattermost/server/v8Go
From 9.11.0 · fixed in 9.11.9
- github.com/mattermost/mattermost-serverGo
fixed in 9.11.9