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TI-2026-79055 Aliases CVE-2026-12664GHSA-g33c-grwm-jpgc

Incorrect authorization in GitLab lets read_api tokens create work items

Priority LOW 32CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

GitLab CE and EE from 18.2 before 19.3.6, from 19.4 before 19.4.3, and from 19.5 before 19.5.1 are affected. Due to insufficient scope enforcement on a GraphQL field (CWE-863), an authenticated user with a read_api-scoped token can retrieve a project's incoming email address and create work items, bypassing the token's restrictions. Exploitation requires certain conditions to be met.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an authenticated user with a read_api-scoped token to retrieve a project's incoming email address and create work items, bypassing the token's restrictions, due to insufficient scope enforcement on a GraphQL field.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 19.3.6, 19.4.3, 19.5.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GitLabGitLab18.2 to before 19.3.6; 19.4 to before 19.4.3; 19.5 to before 19.5.119.3.6, 19.4.3, 19.5.1Patch availableCNA
  • GitLab VendorGitLab Affected 18.2 to before 19.3.6; 19.4 to before 19.4.3; 19.5 to before 19.5.1 Fixed in 19.3.6, 19.4.3, 19.5.1 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*18.2.0 to before 19.3.6VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*18.2.0 to before 19.3.6VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.4.0 to before 19.4.3VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.4.0 to before 19.4.3VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:*19.5.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:*19.5.0VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 18.2.0 to before 19.3.6 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 18.2.0 to before 19.3.6 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.4.0 to before 19.4.3 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.4.0 to before 19.4.3 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:* Versions 19.5.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:* Versions 19.5.0 Vulnerable ·GitLab

Remediation

Upgrade GitLab to 19.3.6, 19.4.3, or 19.5.1. The sources do not list a vendor advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA GitLab (GitLab) Fixed in 19.3.6, 19.4.3, 19.5.1

Fixed in the same release

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

  • Release ·

    GitLab 19.3.6, 19.4.3, 19.5.1

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2026-79058 LDAP injection in GitLab lets users take over LDAP-backed accountsPriority LOW 38
    • TI-2026-79063 Cache poisoning in GitLab OAuth/OIDC discovery redirects flowsPriority LOW 32
    • TI-2026-79059 Incorrect authorization in GitLab lets users bypass membership locksPriority LOW 31
    Show all 11 records →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-12664
  2. 2026-10-22 Alias added: GHSA-g33c-grwm-jpgc
  3. 2026-10-23 CISA SSVC decision points changed
  4. 2026-10-23 Priority changed: MEDIUM → LOW
  5. 2026-10-23 CISA SSVC decision points changed

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