CVE-2021-39940 - CVE House
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Status published Medium CVE-2021-39940

An issue has been discovered in GitLab CE/EE affecting all...

Vulnerability Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.2 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. GitLab Maven Package registry is vulnerable to a regular expression denial of service when a specifically crafted string is sent.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks @anyday for reporting this vulnerability through our HackerOne bug bounty program.

References

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CVE-2025-9642
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CVE-2025-9484
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Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
>=14.5, <14.5.2, >=14.4, <14.4.4, >=13.2, <14.3.6

Timeline

Official Publish: December 13th, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.