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TI-2026-04253 Aliases CVE-2026-4879GHSA-8qfw-v7h4-gcfv

Missing Authorization in GitLab

Priority MEDIUM 53CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to view external status check configuration restricted to higher-privileged roles due to missing authorization on a merge request API endpoint.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00331 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 19.0.6, 19.1.4, 19.2.2

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
GitLabGitLab16.0 to before 19.0.6; 19.1 to before 19.1.4; 19.2 to before 19.2.219.0.6, 19.1.4, 19.2.2Patch availableCNA
  • GitLab VendorGitLab Affected 16.0 to before 19.0.6; 19.1 to before 19.1.4; 19.2 to before 19.2.2 Fixed in 19.0.6, 19.1.4, 19.2.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*16.0.0 to before 19.0.6; 19.1.0 to before 19.1.4; 19.2.0 to before 19.2.2VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 16.0.0 to before 19.0.6; 19.1.0 to before 19.1.4; 19.2.0 to before 19.2.2 Vulnerable ·GitLab

Remediation

  • Fix · CNA GitLab (GitLab) Fixed in 19.0.6, 19.1.4, 19.2.2

Fixed in the same release

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

  • Release ·

    GitLab 19.0.6, 19.1.4, 19.2.2

    9 records Highest priority Priority MEDIUM 4 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2025-08692 Incorrect Privilege Assignment in GitLabPriority MEDIUM 49
    • TI-2026-12814 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLabPriority MEDIUM 40
    • TI-2026-12813 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLabPriority MEDIUM 40
    Show all 9 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4879
  2. 2026-10-03 Alias added: GHSA-8qfw-v7h4-gcfv

References

Exploit 1

Other 2

  • 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