CVE-2026-3988 Details
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.
A denial-of-service vulnerability has been identified in GitLab Community Edition (CE) and Enterprise Edition (EE) versions 18.5 prior to 18.8.7, 18.9 prior to 18.9.3, and 18.10 prior to 18.10.1. The issue arises from improper input validation in GraphQL request processing, which could have allowed an unauthenticated user to make the GitLab instance unresponsive.
Users are advised to upgrade to GitLab versions 18.10.1, 18.9.3, or 18.8.7. Instructions for updating GitLab can be found on the GitLab Update page. For GitLab Runner, see the Updating the Runner page.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 25, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/ | [email protected] | Release NotesVendor Advisory |
| https://gitlab.com/gitlab-org/gitlab/-/work_items/593140 | [email protected] | Broken Link |
| https://hackerone.com/reports/3597342 | [email protected] | Permissions Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-407 | Inefficient Algorithmic Complexity | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| gitlab gitlab | >= 18.5.0, < 18.8.7 >= 18.9.0, < 18.9.3 18.10.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 26, 2026 | Initial Analysis | [email protected] |
| Mar 25, 2026 | New CVE Received | [email protected] |