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TI-2026-71509 Aliases CVE-2026-100104GHSA-mv9g-3c33-88m6

Server-side request forgery in GitLab repository import

Priority LOW 16CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

GitLab CE/EE from 10.3 before 19.2.8, from 19.3 before 19.3.5, and from 19.4 before 19.4.2 is affected by a server-side request forgery flaw (CWE-918) caused by a time-of-check to time-of-use race condition in URL validation during repository import operations. An authenticated user with low privileges can, under certain conditions, make the server reach internal network resources.

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 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th percentileScored 2026-11-07
Fix Fixed GitLab (GitLab): 19.2.8, 19.3.5, 19.4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
GitLabGitLab10.3 to before 19.2.8; 19.3 to before 19.3.5; 19.4 to before 19.4.219.2.8, 19.3.5, 19.4.2Patch availableCNA
  • GitLab VendorGitLab Affected 10.3 to before 19.2.8; 19.3 to before 19.3.5; 19.4 to before 19.4.2 Fixed in 19.2.8, 19.3.5, 19.4.2 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*10.3.0 to before 19.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*10.3.0 to before 19.2.8VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.3.0 to before 19.3.5VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.3.0 to before 19.3.5VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*19.4.0 to before 19.4.2VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*19.4.0 to before 19.4.2VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 10.3.0 to before 19.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 10.3.0 to before 19.2.8 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.3.0 to before 19.3.5 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.3.0 to before 19.3.5 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* Versions 19.4.0 to before 19.4.2 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* Versions 19.4.0 to before 19.4.2 Vulnerable ·GitLab

Remediation

Upgrade GitLab to 19.2.8, 19.3.5, or 19.4.2, depending on the release branch in use.

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

  • Fix · CNA GitLab (GitLab) Fixed in 19.2.8, 19.3.5, 19.4.2

Fixed in the same release

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

  • Release ·

    GitLab 19.2.8, 19.3.5, 19.4.2

    23 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 21 LOW

    Other records, highest priority first

    • TI-2026-71508 Integer overflow in GitLab allows code execution on the serverPriority CRITICAL 100
    • TI-2026-71506 Cross-site scripting in GitLab syntax-highlighted outputPriority MEDIUM 40
    • TI-2026-71475 Permissive regular expression in GitLab lets attackers poison cached filesPriority LOW 38
    Show all 23 records →

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-100104
  2. 2026-10-13 Alias added: GHSA-mv9g-3c33-88m6
  3. 2026-10-15 CISA SSVC decision points changed

References

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