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TI-2023-03647 Aliases CVE-2023-3906GHSA-x2v6-6q9m-6qx9

Improper Validation of Specified Type of Input in GitLab

Priority MEDIUM 50CWE-1287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00566 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 16.2.8, 16.3.5, 16.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GitLabGitLab12.3 to before 16.2.8; 16.3 to before 16.3.5; 16.4 to before 16.4.116.2.8, 16.3.5, 16.4.1Patch availableCNA
  • GitLab VendorGitLab Affected 12.3 to before 16.2.8; 16.3 to before 16.3.5; 16.4 to before 16.4.1 Fixed in 16.2.8, 16.3.5, 16.4.1 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*12.3 to before 16.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*12.3 to before 16.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*16.3.0 to before 16.3.5VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*16.3.0 to before 16.3.5VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:16.4.0:*:*:*:community:*:*:*16.4.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:16.4.0:*:*:*:enterprise:*:*:*16.4.0VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 12.3 to before 16.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 12.3 to before 16.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 16.3.0 to before 16.3.5 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 16.3.0 to before 16.3.5 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:16.4.0:*:*:*:community:*:*:* Versions 16.4.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:16.4.0:*:*:*:enterprise:*:*:* Versions 16.4.0 Vulnerable ·GitLab

Remediation

  • Fix · CNA GitLab (GitLab) Fixed in 16.2.8, 16.3.5, 16.4.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    GitLab 16.2.8, 16.3.5, 16.4.1

    11 records Highest priority Priority HIGH 2 HIGH, 6 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2023-03652 Improper Validation of Specified Type of Input in GitLabPriority HIGH 66
    • TI-2023-03191 Insertion of Sensitive Information Into Sent Data in GitLabPriority HIGH 66
    • TI-2023-03654 URL Redirection to Untrusted Site ('Open Redirect') in GitLabPriority MEDIUM 64
    Show all 11 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-3906
  2. 2026-10-03 Alias added: GHSA-x2v6-6q9m-6qx9

References

Exploit 1

Advisory 1

  • TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-58817 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2023-06425 Weak Password Recovery Mechanism for Forgotten Password in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05191 Code injection in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05161 Server-side request forgery in GitLab KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-02763 Injection in GitLab CVSS 3.1CRITICAL 9.9
See all 1506 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences