What is CVE-2023-6489?

CVE-2023-6489 is a medium-severity vulnerability in Gitlab, classified under Inefficient Regular Expression Complexity. CVSS score: 4.3/10. Published 2024-04-12.

How severe is CVE-2023-6489?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Gitlab

CVE-2023-6489

A denial of service vulnerability was identified in GitLab CE/EE, versions 16.7.7 prior to 16.8.6, 16.9 prior to 16.9.4 and 16.10 prior to 16.10.2 which allows an attacker to spike the GitLab instance resources usage resulting in service degradation via chat integration feature.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.006 (45.2th 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:N/I:N/A:L.

Affected products

Gitlab — versions 16.7.7, 16.9, 16.10

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

GitLab Issue #433520 (issue-tracking, permissions-required, Broken Link)
HackerOne Bug Bounty Report #2262450 (Permissions Required, technical-description, permissions-required, exploit, broken-link)

Frequently asked questions

What is CVE-2023-6489?: CVE-2023-6489 is a medium-severity vulnerability in Gitlab, classified under Inefficient Regular Expression Complexity. CVSS score: 4.3/10. Published 2024-04-12.
How severe is CVE-2023-6489?: Medium severity. CVSS v3 base score is 4.3 out of 10.