PT-2026-27987 · Gitlab · Gitlab Ce/Ee

Published 2026-03-25 · Updated 2026-03-27 · CVE-2026-2726

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 11.10 through 18.8.6 GitLab CE/EE versions 18.9 through 18.9.2 GitLab CE/EE versions 18.10 through 18.10.0

Description An authenticated user could perform unauthorized actions on merge requests in other projects. This was due to improper access control during cross-repository operations.

Recommendations Update GitLab CE/EE to version 18.8.7 or later. Update GitLab CE/EE to version 18.9.3 or later. Update GitLab CE/EE to version 18.10.1 or later.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

BDU:2026-06380

BIT-GITLAB-2026-2726

CVE-2026-2726

Affected Products

Gitlab Ce/Ee

References · 12

• 🔥 https://hackerone.com/reports/3543886 · Exploit
• https://osv.dev/vulnerability/BIT-gitlab-2026-2726 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-2726 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2726 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2726 · Security Note
• https://bdu.fstec.ru/vul/2026-06380 · Security Note
• https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2726 · Vendor Advisory
• https://gitlab.com/gitlab-org/gitlab/-/work_items/590717 · Note
• https://docs.gitlab.com/releases/patches/patch-release-gitlab-18-10-1-released · Note
• https://twitter.com/CVEnew/status/2036911839851004257 · Twitter Post
• https://twitter.com/threatcluster/status/2037272274806448604 · Twitter Post