How severe is CVE-2026-12635?

CVE-2026-12635 has a CVSS 3.x base score of 0.0, rated none severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability none.

Is CVE-2026-12635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-12635?

CVE-2026-12635 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-12635?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-12635 have an EU (EUVD) identifier?

Yes. CVE-2026-12635 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39168.

When was CVE-2026-12635 published?

CVE-2026-12635 was published on 2026-06-25 and last updated on 2026-06-26.

CVE-2026-12635

CVE-2026-12635 is a none-severity vulnerability in Gitlab with a CVSS 3.x base score of 0.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-350.

Key facts

Severity: None (CVSS 3.x base score 0.0)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39168
Weakness: CWE-350
Affected product: Gitlab
Published: 2026-06-25
Last modified: 2026-06-26

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.

Frequently asked questions

What is CVE-2026-12635?: 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.
How severe is CVE-2026-12635?: CVE-2026-12635 has a CVSS 3.x base score of 0.0, rated none severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability none.
Is CVE-2026-12635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-12635?: CVE-2026-12635 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-12635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-12635 have an EU (EUVD) identifier?: Yes. CVE-2026-12635 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39168.
When was CVE-2026-12635 published?: CVE-2026-12635 was published on 2026-06-25 and last updated on 2026-06-26.

References

Affected products (2)

cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:19.1.0:*:*:*:*:*:*:*

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