Medium [CVE-2026-1403] 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
This medium-severity GitLab advisory covers CVE-2026-1403 affecting GitLab.
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Summary
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.
- before 18.8.9
- before 18.9.5
- before 18.10.3
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- 18.8.9
- 18.9.5
- 18.10.3
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation
Upgrade to a fixed release: 18.8.9, 18.9.5, 18.10.3. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Discussion(0)
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