Vulnerability in Mattermost
CVE-2024-29977
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts
EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Mattermost — versions 9.9.0, 9.5.0, 9.10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-29977?
- CVE-2024-29977 is a low-severity vulnerability in Mattermost, classified under Improper Access Control. CVSS score: 2.7/10. Published 2024-08-01.
- How severe is CVE-2024-29977?
- Low severity. CVSS v3 base score is 2.7 out of 10.
- Is CVE-2024-29977 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.