Incorrect Authorization in GitLab

published 2025-10-09 13 mo ago modified 2026-10-19 20 d ago also BIT-gitlab-2025-11340 , EUVD-2025-33333

cvss: 7.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 to 18.3.4, 18.4 to 18.4.2 that, under certain conditions, could have allowed authenticated users with read-only API tokens to perform unauthorized write operations on vulnerability records by exploiting incorrectly scoped GraphQL mutations.

Patch / fix

fixed in 2

bitnami gitlab 18.3.4, 18.4.2
GitLab GitLab 18.3.4, 18.4.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 13 mo ago (2025-10-09)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
OSV	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	gitlab	>=18.3.0, <18.3.4 >=18.4.0, <18.4.2	18.3.4 18.4.2

Affected products

GitLab GitLab

Classification

Weakness

CWE-863 Incorrect Authorization

Technology feeds

GitLab rss critical rss

References

about.gitlab.com /releases/2025/10/08/patch-release-gitlab-18-4-2-released/
release-notes, vendor-advisory, advisory
gitlab.com /gitlab-org/gitlab/-/issues/567847
issue-tracking, permissions-required, broken-link, web
nvd.nist.gov /vuln/detail/CVE-2025-11340
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary