CSRF in Mattermost
CVE-2024-36255
Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper input validation on post actions which allows an attacker to run a playbook checklist task command as another user via creating and sharing a deceptive post action that unexpectedly runs a slash command in some arbitrary channel.
Vulnerability class: CSRF (Cross-Site Request Forgery)
EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Mattermost — versions 9.5.0, 9.6.0, 8.1.0
- Mattermost Mattermost_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-36255?
- CVE-2024-36255 is a medium-severity vulnerability in Mattermost, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.7/10. Published 2024-05-26.
- How severe is CVE-2024-36255?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2024-36255 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.