CVE-2023-3906

Improper Validation of Specified Type of Input in GitLab

An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy.

Affected

GitLab

CVSS v3.1 NVD

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

EPSS

0.57% chance of exploitation in the next 30 days, 46th percentile

Published

2023-09-29

Updated

2026-08-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2071411

Security advisories

• https://gitlab.com/gitlab-org/gitlab/-/issues/419213

References

• CVE Record
• NVD entry