What’s Vulnerable › Vulnerabilities

CVE-2026-1403: Allocation of Resources Without Limits or Throttling in GitLab

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-07 · updated 2026-10-08
• Weakness: CWE-770

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.7 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that when importing CSV files could have allowed an authenticated user to cause denial of service to Sidekiq workers due to improper validation of CSV file structure.

Affected products

• GitLab: from 11.7 before 18.8.9; from 18.9 before 18.9.5; from 18.10 before 18.10.3 — fixed in 18.10.3, 18.8.9, 18.9.5

How to fix

Upgrade to a fixed version: GitLab 18.10.3, 18.8.9, 18.9.5. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/gitlab/-/work_items/587573
• https://hackerone.com/reports/3328937

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