Is CVE-2025-6601 in the CISA KEV catalog?

No. CVE-2025-6601 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-6601?

CVE-2025-6601 has a CVSS v3 base score of 2.7 (LOW).

What is the EPSS score for CVE-2025-6601?

CVE-2025-6601 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-6601?

Upgrade gitlab to 18.4.3 or later.

CVE & CISA-KEV Catalog

CVE-2025-6601

LOW

2.7

CVSS v3

NVD

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.4 before 18.4.3, and 18.5 before 18.5.1 that under certain conditions could have allowed authenticated users to gain unauthorized project access by exploiting the access request approval workflow.

CWE-840

How to fix

Remediation Available

gitlabNVD

Affected:>= 18.4.0, < 18.4.3Fixed in:18.4.3CVE-2025-6601derived 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 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Vendor Advisory1

about.gitlab.com

Other references2

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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 2025-10-28.