CVE-2026-12635 | GitLab has remediated an issue in GitLab CE/EE affecting all…

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with maintainer-role permissions to make requests to internal network resources through mirror synchronization due to improper URL validation.

Metadata

CVE ID: CVE-2026-12635
State: PUBLISHED
Assigner: GitLab
Reserved: 2026-06-18 15:33 UTC
Published: 2026-06-25 04:33 UTC
Last updated: 2026-06-25 04:33 UTC
Primary CWE: CWE-350
CWE-350: Reliance on Reverse DNS Resolution for a Security-C…
Vendor / Product: GitLab / GitLab
Sources: cve.org · NVD

Severity & Metrics

0.0 N/D CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:N

No CVSS data available.

Affected products (1)

Vendor	Product	Platform	Versions
GitLab	GitLab	—	8.3 < 18.11.6, 19.0 < 19.0.3, 19.1 < 19.1.1

Weakness (CWE)

CWE	Source	Description
CWE-350	cna	CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action

CVSS scores (1)

Score	Severity	Version	Source	Vector
0.0	N/D	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:N

References (2)