CVE-2025-12571

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.

CVSS v3.1

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

EPSS

0.51% chance of exploitation in the next 30 days, 41th percentile

Published

2025-11-26

Updated

2025-12-10

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3362239

References

• CVE Record
• NVD entry

Related

• CVE-2025-1257
• CVE-2025-12573
• CVE-2025-12569
• CVE-2025-12575
• CVE-2025-12562
• CVE-2025-12576