cvedb.io
CVE-2021-41110
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2021-10-01T13:15:07.607 · Last modified 2026-06-17T04:07:53.440

Summary

cwlviewer is a web application to view and share Common Workflow Language workflows. Versions prior to 1.3.1 contain a Deserialization of Untrusted Data vulnerability. Commit number f6066f09edb70033a2ce80200e9fa9e70a5c29de (dated 2021-09-30) contains a patch. There are no available workarounds aside from installing the patch. The SnakeYaml constructor, by default, allows any data to be parsed. To fix the issue the object needs to be created with a `SafeConstructor` object, as seen in the patch.

Affected products

commonwl — cwlviewer

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.