Is CVE-2026-12635 in the CISA KEV catalog?

No. CVE-2026-12635 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-12635?

CVE-2026-12635 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-12635?

Upgrade gitlab to 19.0.3 or later.

CVE & CISA-KEV Catalog

CVE-2026-12635

UNSCORED

NVD

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.

CWE-350

How to fix

Remediation Available

gitlabNVD

Affected:>= 19.0.0, < 19.0.3Fixed in:19.0.3CVE-2026-12635derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Vendor Advisory1

docs.gitlab.com

Other references1

gitlab.com

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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-26.