CVE-2026-33344: Dagu

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Dagu is a workflow engine with a built-in Web user interface. From version 2.0.0 to before version 2.3.1, the fix for CVE-2026-27598 added ValidateDAGName to CreateNewDAG and rewrote generateFilePath to use filepath.Base. This patched the CREATE path. The remaining API endpoints - GET, DELETE, RENAME, EXECUTE - all pass the {fileName} URL path parameter to locateDAG without calling ValidateDAGName. %2F-encoded forward slashes in the {fileName} segment traverse outside the DAGs directory. This issue has been patched in version 2.3.1.

Affected products

• Dagu Dagu: from 2.0.0, before 2.3.1 (fixed in 2.3.1)

Published 2026-03-24. Last modified 2026-06-17.