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CVE-2026-1403

Allocation of Resources Without Limits or Throttling in GitLab

GitLab GitLabApplications & CMS
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.33%Chance of exploitation activity in the next 30 days, higher than 24% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in18.8.9Also 18.9.5, 18.10.3CVE List
Published7 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 3

  • GitLabaffected: 11.7 before 18.8.9CVE List
  • GitLabaffected: 18.9 before 18.9.5CVE List
  • GitLabaffected: 18.10 before 18.10.3CVE List

References 2