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Low3.5GitLab

Low [CVE-2023-3906] Improper Validation of Specified Type of Input in GitLab

This low-severity GitLab advisory covers CVE-2023-3906 affecting GitLab.

CVE-2023-3906 Published Sep 29, 2023Updated by vendor Aug 14, 2026
Affected products & platforms
GitLabUnclassified
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Summary

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 versions
  • GitLab 12.3 before 16.2.8
  • GitLab 16.3 before 16.3.5
  • GitLab 16.4 before 16.4.1

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions
  • 16.2.8
  • 16.3.5
  • 16.4.1

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation

Upgrade to a fixed release: 16.2.8, 16.3.5, 16.4.1. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

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