CVE-2026-5816HIGH 8.1EPSS p32.4%

CVE-2026-5816CVE-2026-5816

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS0.41% probability of exploitation · percentile 32.4% · 2026-06-18T12:00:27Z
Published2026-04-22
Last modified2026-04-23

Underlying weaknesses· 1

CWE-41

References

  1. https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/
  2. https://gitlab.com/gitlab-org/gitlab/-/work_items/592816
  3. https://hackerone.com/reports/3572231

1

TypeTargetConfidenceTier
WeaknessImproper Resolution of Path Equivalencecwe-410%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.