Mattermost Incorrect Authorization vulnerability
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.
02 / AFFECTED SOFTWARE
Affected packages
45 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.
Mattermost Incorrect Authorization vulnerability in github.com/mattermost/mattermost-server
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.
05 / REFERENCES
Further evidence
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2025-24839
- https://pkg.go.dev/vuln/GO-2025-3621
- https://github.com/advisories/GHSA-j639-m367-75cf
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24839.json