CVSS 3.1
8.6 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HCVE-2024-32866
High (8.6). EPSS 0.7% chance of exploitation in the next 30 days. Fixed in @conform-to/dom 0.9.2, 1.1.1.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
- CWE
- CWE-1321
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-624g-8qjg-8qxf | npm | @conform-to/dom | >=1.0.0 <1.1.1 | 1.1.1 |
| GHSA-624g-8qjg-8qxf | npm | @conform-to/zod | >=1.0.0 <1.1.1 | 1.1.1 |
| GHSA-624g-8qjg-8qxf | npm | @conform-to/yup | >=1.0.0 <1.1.1 | 1.1.1 |
| GHSA-624g-8qjg-8qxf | npm | @conform-to/zod | <0.9.2 | 0.9.2 |
| GHSA-624g-8qjg-8qxf | npm | @conform-to/yup | <0.9.2 | 0.9.2 |
| GHSA-624g-8qjg-8qxf | npm | @conform-to/dom | <0.9.2 | 0.9.2 |
References
- https://github.com/edmundhung/conform/blob/59156d7115a7207fa3b6f8a70a4342a9b24c2501/packages/conform-dom/formdata.ts#L117
- https://github.com/edmundhung/conform/commit/4819d51b5a53fd5486fc85c17cdc148eb160e3de
- https://github.com/edmundhung/conform/security/advisories/GHSA-624g-8qjg-8qxf
- https://github.com/edmundhung/conform/blob/59156d7115a7207fa3b6f8a70a4342a9b24c2501/packages/conform-dom/formdata.ts#L117
- https://github.com/edmundhung/conform/commit/4819d51b5a53fd5486fc85c17cdc148eb160e3de