What is CVE-2023-0042?

CVE-2023-0042 is a medium-severity vulnerability in GitLab, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2023-01-12.

How severe is CVE-2023-0042?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in GitLab

CVE-2023-0042

An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.4 prior to 15.5.7, 15.6 prior to 15.6.4, and 15.7 prior to 15.7.2. GitLab Pages allows redirection to arbitrary protocols.

Vulnerability class: Open Redirect

Published 2023-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (32.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

GitLab — versions >=11.4, <15.5.7, >=15.6, <15.6.4, >=15.7, <15.7.2

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

gitlab.com/gitlab-org/gitlab-pages/-/issues/728 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0042.json (Vendor Advisory)

Frequently asked questions

What is CVE-2023-0042?: CVE-2023-0042 is a medium-severity vulnerability in GitLab, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2023-01-12.
How severe is CVE-2023-0042?: Medium severity. CVSS v3 base score is 6.1 out of 10.