Conform, a type-safe form validation library, allows the parsing of nested objects in the form of `object.property`. Due to an improper implementation of this feature in versions prior to 1.1.1, an attacker can exploit the feature to trigger prototype pollution by passing a crafted input to `parseWith...` functions. Applications that use conform for server-side validation of form data or URL parameters are affected by this vulnerability. Version 1.1.1 contains a patch for the issue.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| @conform-to/dom(npm) | 1.0.0 | 1.1.1 | N/A |
| @conform-to/zod(npm) | 1.0.0 | 1.1.1 | N/A |
| @conform-to/yup(npm) | 1.0.0 | 1.1.1 | N/A |
| @conform-to/zod(npm) | 0 | 0.9.2 | N/A |
| @conform-to/yup(npm) | 0 | 0.9.2 | N/A |
| @conform-to/dom(npm) | 0 | 0.9.2 | N/A |
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