CVE-2024-32866
HIGHCVE-2024-32866 is a high-severity (CVSS 8.6) CWE-1321 vulnerability in @conform-to/dom. O3 Security confirms whether CVE-2024-32866 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Conform contains Prototype Pollution Vulnerability in `parseWith...` function
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
@conform-to/domnpm@conform-to/zodnpm@conform-to/yupnpmDescription
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @conform-to/dom | ≥ 1.0.0&&< 1.1.1 | 1.1.1 |
| 📦npm | @conform-to/zod | ≥ 1.0.0&&< 1.1.1 | 1.1.1 |
| 📦npm | @conform-to/yup | ≥ 1.0.0&&< 1.1.1 | 1.1.1 |
| 📦npm | @conform-to/zod | all versions | 0.9.2 |
| 📦npm | @conform-to/yup | all versions | 0.9.2 |
| 📦npm | @conform-to/dom | all versions | 0.9.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @conform-to/dom. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update @conform-to/dom to 1.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-32866 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2024-32866 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2024-32866. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2024-32866 in your dependencies?
O3 detects CVE-2024-32866 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.