CVE-2026-12635

🔶 medium

Summary

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.

CVSS Score

0.0

EPSS Score

0.2

Exploit Probability

Published Date

2026-06-25

First Seen: 2026-06-26

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 0.0% of all 330,193 vulnerabilities in our database.

#330,128

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 25, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

This vulnerability has been discovered internally by GitLab team member Félix Veillette-Potvin

SSVC data provided by CISA

Last Modified 2026-06-26

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-350

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
gitlab	gitlab	Affected	> 8.3.0 < 18.11.6
gitlab	gitlab	Affected	> 19.0.0 < 19.0.3
gitlab	gitlab	Affected	v19.1.0

🔗 References 2

https://docs.gitlab.com/releases/patches/patch-relea...

Release Notes Vendor Advisory

https://gitlab.com/gitlab-org/gitlab/-/work_items/59...

Broken Link

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-0934	ℹ️ low	3.8	0.2	GitLab has remediated an issue in GitLab EE affecting all versions from 17.9 before 18.11.6, 19.0 before 19.0.3, and 19....	2026-06-25
CVE-2026-10086	⚠️ high	8.7	0.3	GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.11.6, 19.0 before 19.0.3, and 19....	2026-06-25
CVE-2026-10712	⚠️ high	8.0	0.3	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.11.6, 19.0 before 19.0.3, and...	2026-06-25
CVE-2026-11379	🔶 medium	5.3	0.2	GitLab has remediated an issue in GitLab EE affecting all versions from 13.11 prior to 18.11.6, 19.0 prior to 19.0.3, an...	2026-06-25
CVE-2026-12053	⚠️ high	8.6	0.3	GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.1 that under certain conditions...	2026-06-25
CVE-2026-1606	🔶 medium	4.3	0.2	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.8 before 18.11.6, 19.0 before 19.0.3, and ...	2026-06-25

These CVEs affect the same products