CVE-2021-41110
Critical
Description
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductCommonwl Cwlviewer
PublishedOct 1, 2021
First seenOct 1, 2021
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Update
- commonwl cwlviewer1.3.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| commonwl cwlviewer | v < 1.3.1 | 1.3.1 |
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