CVE-2025-13352GO-2025-4247GHSA-JF5H-XFW4-P8GP
Mattermost GitHub Plugin allows unauthorized GitHub reactions via reaction forwarding hijacking
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 11.1.0+incompatible, 1.0.1-0.20250829075715-0deffcfc6bee, 10.11.7-0.20251106103514-3b05384dd014, 11.1.0
- 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 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 10.11.0 · through 10.11.6
- github.com/mattermost/mattermostGo
From 11.0.0-alpha.1+incompatible · fixed in 11.1.0+incompatible
- github.com/mattermost/mattermost-plugin-githubGo
fixed in 1.0.1-0.20250829075715-0deffcfc6bee
- github.com/mattermost/mattermost-serverGo
From 10.11.0-rc1+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
- github.com/mattermost/mattermost/server/v8Go
From 10.11.0-rc1 · fixed in 10.11.7-0.20251106103514-3b05384dd014
- github.com/mattermost/mattermostGo
fixed in 10.11.7-0.20251106103514-3b05384dd014
- github.com/mattermost/mattermostGo
From 11.0.0-alpha.1 · fixed in 11.1.0