Is CVE-2026-5816 actively exploited?

CVE-2026-5816 has no public evidence of in-the-wild exploitation as of 2026-04-23.

What is the CVSS score for CVE-2026-5816?

CVE-2026-5816 has a CVSS score of 8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N.

How do I patch CVE-2026-5816?

Patch guidance is available from gitlab security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-5816.

Fix CVE-2026-5816 - HIGH gitlab gitlab

Q: Which products are affected by CVE-2026-5816?

4 products: gitlab gitlab, gitlab gitlab, gitlab gitlab, gitlab gitlab.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Attack Vector: network
Complexity: high
Privileges: none
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: CWE-41

Metadata

Primary Vendor: GITLAB
Published: 4/22/2026
Last Modified: 4/23/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-5816

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary