Information disclosure in Mattermost
CVE-2023-43754
Mattermost fails to check whether the “Allow users to view archived channels” setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled.
Vulnerability class: Information Disclosure
EPSS: 0.005 (40.3th 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:L/I:N/A:N.
Affected products
- Mattermost — versions 7.8.13, 8.1.4, 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-43754?
- CVE-2023-43754 is a medium-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 4.3/10. Published 2023-11-27.
- How severe is CVE-2023-43754?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2023-43754 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.