CVE-2026-1402

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.1 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed an authenticated user to cause denial of service due to insufficient validation.

CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
gitlab	gitlab	17.1.0 — 18.10.7
gitlab	gitlab	17.1.0 — 18.10.7
gitlab	gitlab	18.11.0 — 18.11.4
gitlab	gitlab	18.11.0 — 18.11.4
gitlab	gitlab	All
gitlab	gitlab	All

References

Other References

https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/ https://gitlab.com/gitlab-org/gitlab/-/work_items/587569 https://hackerone.com/reports/3517283

Frequently Asked Questions

What is CVE-2026-1402? +

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.1 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed an authenticated user to cause denial of service due to insufficient validation. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-1402? +

CVE-2026-1402 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2026-1402? +

CVE-2026-1402 affects products from gitlab, specifically: gitlab. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-1402? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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