Auth bypass in GitLab
CVE-2023-5356
Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- GitLab — versions 16.7, 16.7.1, 8.13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/issues/427154 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/2188868 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2023-5356?
- CVE-2023-5356 is a high-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 7.3/10. Published 2024-01-12.
- How severe is CVE-2023-5356?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2023-5356 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.