CVE-2026-6335

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization.

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.19% chance of exploitation in the next 30 days, 9th percentile

Published

2026-05-14

Updated

2026-05-15

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3673647

References

• CVE Record
• NVD entry

Related

• CVE-2026-63336
• CVE-2026-6336
• CVE-2026-63335
• CVE-2026-63462
• CVE-2026-63308
• CVE-2026-6352