Description
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/dagu-org/dagu/security/advisories/GHSA-ph8x-4jfv-v9v8
X_Refsource_Misc x_refsource_misc
https://github.com/dagu-org/dagu/commit/7d07fda8f9de3ae73dfb081ccd0639f8059c56bb
Scores
CVSS v3
8.1
EPSS
0.0047
EPSS Percentile
36.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-22
Status
published
Products (3)
dagu/dagu
2.0.0 - 2.3.1
dagu-org/dagu
1.30.4-0.20260221021317-e2ed589105d7 - 1.30.4-0.20260319093346-7d07fda8f9deGo
dagu-org/dagu
>= 2.0.0, < 2.3.1
Published
Mar 24, 2026
Tracked Since
Mar 25, 2026