What is CVE-2023-5226?

CVE-2023-5226 is a medium-severity vulnerability in Gitlab, classified under Code Injection. CVSS score: 4.8/10. Published 2023-12-01.

How severe is CVE-2023-5226?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2023-5226 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Gitlab

CVE-2023-5226

An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.006 (42.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N.

Affected products

Gitlab — versions 16.6.0, 0, 16.5

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

GitLab Issue #426400 (issue-tracking, permissions-required, Broken Link, Vendor Advisory)
HackerOne Bug Bounty Report #2173053 (Permissions Required, technical-description, permissions-required, exploit, Third Party Advisory, broken-link)

Frequently asked questions

What is CVE-2023-5226?: CVE-2023-5226 is a medium-severity vulnerability in Gitlab, classified under Code Injection. CVSS score: 4.8/10. Published 2023-12-01.
How severe is CVE-2023-5226?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2023-5226 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.