GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an unauthenticated user to cause a Denial of Service condition by sending specifically crafted requests containing malicious JSON payloads.
CVE-2025-12571
HIGHNVD 7.5
7.5
- CVSS v3
- 7.5
- EG Score
- —
- EPSS
- —
- KEV
- Not listed
Published
November 26, 2025
Last Modified
December 10, 2025
References (3)
Vendor Advisories for CVE-2025-12571(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(4)
What is CVE-2025-12571?
CVE-2025-12571 is a high vulnerability published on November 26, 2025. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an unauthenticated user to cause a Denial of Service condition by sending specifically crafted requests containing malicious JSON…
When was CVE-2025-12571 disclosed?
CVE-2025-12571 was first published in the National Vulnerability Database on November 26, 2025, with the most recent update on December 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2025-12571?
CVE-2025-12571 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-12571?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-12571, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-12571
Is Your Infrastructure Affected by CVE-2025-12571?
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