GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.0 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 sending specially crafted requests due to insufficient input validation.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
GitLab GitLab unaffected
Version Status Constraints
9.0 affected < 18.9.7
18.10 affected < 18.10.6
18.11 affected < 18.11.3

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

Upgrade to versions 18.9.7, 18.10.6, 18.11.3 or above.

Workaround

No workaround given by the vendor.

References
Link Providers
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/ cve-icon cve-icon
https://gitlab.com/gitlab-org/gitlab/-/work_items/588201 cve-icon cve-icon
https://hackerone.com/reports/3519824 cve-icon cve-icon
History

Thu, 14 May 2026 06:00:00 +0000

Type Values Removed Values Added
Description GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.0 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 sending specially crafted requests due to insufficient input validation.
Title Allocation of Resources Without Limits or Throttling in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-770
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-05-14T05:36:32.362Z

Reserved: 2026-01-29T20:03:47.704Z

Link: CVE-2026-1659

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-14T06:16:21.667

Modified: 2026-05-14T06:16:21.667

Link: CVE-2026-1659

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T07:30:06Z

Weaknesses