Auth bypass in Mattermost
CVE-2023-1774
When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's permission to that channel, allowing an attacker to invite themselves to a private channel.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Mattermost — versions 0, 7.7.2, 7.8.0
- Mattermost Server — versions 7.7.1
Weakness classification (CWE)
References
- mattermost.com/security-updates/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-1774?
- CVE-2023-1774 is a medium-severity vulnerability in Mattermost, classified under Missing Authorization. CVSS score: 4.2/10. Published 2023-03-31.
- How severe is CVE-2023-1774?
- Medium severity. CVSS v3 base score is 4.2 out of 10.