Resource exhaustion in Mattermost
CVE-2023-49809
Mattermost fails to handle a null request body in the /add endpoint, allowing a simple member to send a request with null request body to that endpoint and make it crash. After a few repetitions, the plugin is disabled.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.006 (47.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Mattermost — versions 0, 8.1.6, 9.2.0
- Mattermost Mattermost_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-49809?
- CVE-2023-49809 is a medium-severity vulnerability in Mattermost, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2023-12-12.
- How severe is CVE-2023-49809?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2023-49809 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.