GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to perform unauthorized actions on merge requests in other projects due to improper access control during cross-repository operations.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

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
11.10 affected < 18.8.7
18.9 affected < 18.9.3
18.10 affected < 18.10.1

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Gitlab Subscribe
Gitlab Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to versions 18.8.7, 18.9.3, 18.10.1 or above.

Workaround

No workaround given by the vendor.

References
Link Providers
https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/ cve-icon cve-icon
https://gitlab.com/gitlab-org/gitlab/-/work_items/590717 cve-icon cve-icon
https://hackerone.com/reports/3543886 cve-icon cve-icon
History

Wed, 25 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 25 Mar 2026 16:45:00 +0000

Type Values Removed Values Added
Description GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to perform unauthorized actions on merge requests in other projects due to improper access control during cross-repository operations.
Title Incorrect Authorization in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-863
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-03-25T17:14:34.612Z

Reserved: 2026-02-18T22:03:54.593Z

Link: CVE-2026-2726

cve-icon Vulnrichment

Updated: 2026-03-25T17:14:32.340Z

cve-icon NVD

Status : Received

Published: 2026-03-25T17:16:57.640

Modified: 2026-03-25T17:16:57.640

Link: CVE-2026-2726

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses