What is CVE-2023-3904?

CVE-2023-3904 is a medium-severity vulnerability in GitLab, classified under CWE-1287. CVSS score: 4.3/10. Published 2023-12-15.

How severe is CVE-2023-3904?

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

Vulnerability in GitLab

CVE-2023-3904

An issue has been discovered in GitLab EE affecting all versions starting before 16.4.4, all versions starting from 16.5 before 16.5.4, all versions starting from 16.6 before 16.6.2. It was possible to overflow the time spent on an issue that altered the details shown in the issue boards.

Published 2023-12-15 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.008 (53.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.5% 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 0, 16.5, 16.6

Weakness classification (CWE)

CWE-1287

References

GitLab Issue #418226 (issue-tracking, Broken Link)
HackerOne Bug Bounty Report #2053154 (Permissions Required, technical-description, permissions-required, exploit, broken-link)

Frequently asked questions

What is CVE-2023-3904?: CVE-2023-3904 is a medium-severity vulnerability in GitLab, classified under CWE-1287. CVSS score: 4.3/10. Published 2023-12-15.
How severe is CVE-2023-3904?: Medium severity. CVSS v3 base score is 4.3 out of 10.