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TI-2026-04597 Aliases CVE-2026-5262GHSA-g9pv-f88j-p6rr

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Priority LOW 36CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.1.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an unauthenticated user to access tokens in the Storybook development environment due to improper input validation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00223 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed GitLab (GitLab): 18.9.6, 18.10.4, 18.11.1

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
GitLabGitLab16.1.0 to before 18.9.6; 18.10 to before 18.10.4; 18.11 to before 18.11.118.9.6, 18.10.4, 18.11.1Patch availableCNA
  • GitLab VendorGitLab Affected 16.1.0 to before 18.9.6; 18.10 to before 18.10.4; 18.11 to before 18.11.1 Fixed in 18.9.6, 18.10.4, 18.11.1 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*16.1.0 to before 18.9.6VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*16.1.0 to before 18.9.6VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*18.10.0 to before 18.10.4VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*18.10.0 to before 18.10.4VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*18.11.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*18.11.0VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 16.1.0 to before 18.9.6 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 16.1.0 to before 18.9.6 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 18.10.0 to before 18.10.4 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 18.10.0 to before 18.10.4 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:* Versions 18.11.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:* Versions 18.11.0 Vulnerable ·GitLab

Remediation

  • Fix · CNA GitLab (GitLab) Fixed in 18.9.6, 18.10.4, 18.11.1

Fixed in the same release

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

  • Release ·

    GitLab 18.10.4, 18.11.1, 18.9.6

    8 records Highest priority Priority MEDIUM 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-01345 Allocation of Resources Without Limits or Throttling in GitLabPriority MEDIUM 62
    • TI-2025-05436 Allocation of Resources Without Limits or Throttling in GitLabPriority MEDIUM 62
    • TI-2025-03468 Allocation of Resources Without Limits or Throttling in GitLabPriority MEDIUM 62
    Show all 8 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5262
  2. 2026-10-03 Alias added: GHSA-g9pv-f88j-p6rr

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