CVE-2026-3857

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection.

CVSS v3.1

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

CVSS v3.1

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

EPSS

0.17% chance of exploitation in the next 30 days, 6th percentile

Published

2026-03-25

Updated

2026-03-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3584382

References

• CVE Record
• NVD entry

Related

• CVE-2026-3854
• CVE-2026-38751
• CVE-2026-38533
• CVE-2026-38763
• CVE-2026-38526
• CVE-2026-38764