Information disclosure in Mattermost
CVE-2024-39807
Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to properly sanitize the recipients of a webhook event which allows an attacker monitoring webhook events to retrieve the channel IDs of archived or restored channels.
Vulnerability class: Information Disclosure
EPSS: 0.003 (27.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Mattermost — versions 9.8.0, 9.5.0, 9.9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- responsibledisclosure@mattermost.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-39807?
- CVE-2024-39807 is a low-severity vulnerability in Mattermost, classified under Information Disclosure. CVSS score: 3.1/10. Published 2024-07-03.
- How severe is CVE-2024-39807?
- Low severity. CVSS v3 base score is 3.1 out of 10.
- Is CVE-2024-39807 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.