What is CVE-2026-1184?

CVE-2026-1184 is a medium-severity vulnerability in Gitlab, classified under Deserialization of Untrusted Data. CVSS score: 6.5/10. Published 2026-05-14.

How severe is CVE-2026-1184?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Deserialization in Gitlab

CVE-2026-1184

GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially…

Vulnerability class: Insecure Deserialization

EPSS: 0.000 (4.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gitlab — versions 11.9, 18.10, 18.11

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)
cve@gitlab.com (Not Applicable)
cve@gitlab.com (Release Notes)

Frequently asked questions

What is CVE-2026-1184?: CVE-2026-1184 is a medium-severity vulnerability in Gitlab, classified under Deserialization of Untrusted Data. CVSS score: 6.5/10. Published 2026-05-14.
How severe is CVE-2026-1184?: Medium severity. CVSS v3 base score is 6.5 out of 10.