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TI-2026-71487 Aliases CVE-2026-84284GHSA-3g57-f338-642q

Incorrect Authorization in GitLab

Priority LOW 30CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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-863.

Summary

GitLab CE/EE from 17.11 before 19.2.8, from 19.3 before 19.3.6, and from 19.4 before 19.4.2 contain incorrect authorization checks (CWE-863). Under certain conditions, an unauthenticated remote attacker can read work item contents from private groups and projects. The references include an exploit link.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.11 before 19.2.8, 19.3 before 19.3.6, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to read work item contents from private groups and projects due to incorrect authorization checks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00263 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 19.2.8, 19.3.6, 19.4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
GitLabGitLab17.11 to before 19.2.8; 19.3 to before 19.3.6; 19.4 to before 19.4.219.2.8, 19.3.6, 19.4.2Patch availableCNA
  • GitLab VendorGitLab Affected 17.11 to before 19.2.8; 19.3 to before 19.3.6; 19.4 to before 19.4.2 Fixed in 19.2.8, 19.3.6, 19.4.2 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*17.11.0 to before 19.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*17.11.0 to before 19.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.3.0 to before 19.4.2VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.3.0 to before 19.4.2VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 17.11.0 to before 19.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 17.11.0 to before 19.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.3.0 to before 19.4.2 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.3.0 to before 19.4.2 Vulnerable ·GitLab

Remediation

Upgrade GitLab CE/EE to 19.2.8, 19.3.6, or 19.4.2 or later, depending on the affected branch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA GitLab (GitLab) Fixed in 19.2.8, 19.3.6, 19.4.2

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-84284
  2. 2026-10-13 Alias added: GHSA-3g57-f338-642q
  3. 2026-10-15 CISA SSVC decision points changed
  4. 2026-10-22 Fix available: GitLab/[email protected] · CNA

References

Exploit 1

Advisory 1

Other 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