Arbitrary Mattermost Team can be joined by manipulating the SAML RelayState
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 8.0.0-20250815100400-2d5cdc6e217e, 10.11.2, 10.10.3, 10.5.11, 10.5.11+incompatible, 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
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Mattermost Mattermost
From 10.11.0 · through 10.11.1; From 10.10.0 · through 10.10.2; From 10.5.0 · through 10.5.10
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.0.0-20250815100400-2d5cdc6e217e
- github.com/mattermost/mattermost-serverGo
From 10.11.0 · fixed in 10.11.2
- github.com/mattermost/mattermost-serverGo
From 10.10.0 · fixed in 10.10.3
- github.com/mattermost/mattermost-serverGo
From 10.5.0 · fixed in 10.5.11
- github.com/mattermost/mattermost-serverGo
From 10.5.0+incompatible · fixed in 10.5.11+incompatible; From 10.10.0+incompatible · fixed in 10.10.3+incompatible; From 10.11.0+incompatible · fixed in 10.11.2+incompatible
- github.com/mattermost/mattermost-server/v5Go
All versions
- github.com/mattermost/mattermost-server/v6Go
All versions
- github.com/mattermost/mattermost/server/v8Go
All versions