CVE-2024-32866 Conform contains Prototype Pollution Vulnerability in `parseWith...` function

High 8.6 Published Updated

Prototype pollution in Conform allows attackers to manipulate object prototypes via crafted inputs, potentially leading to code execution or privilege escalation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-32866?

CVE-2024-32866 is a high-severity vulnerability in edmundhung conform, published on 23 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-1321

Which versions are affected by CVE-2024-32866?

12 open source packages ship an affected version, including @conform-to/dom, @conform-to/yup and @conform-to/zod.

PackageAffectedFixed in
@conform-to/dom npmAll versions0.9.2
@conform-to/dom npmAll versions0.9.2
@conform-to/dom npmFrom 1.0.01.1.1
@conform-to/dom npmFrom 1.0.01.1.1
@conform-to/yup npmAll versions0.9.2
@conform-to/yup npmAll versions0.9.2
6 more packages
@conform-to/yup npmFrom 1.0.01.1.1
@conform-to/yup npmFrom 1.0.01.1.1
@conform-to/zod npmAll versions0.9.2
@conform-to/zod npmAll versions0.9.2
@conform-to/zod npmFrom 1.0.01.1.1
@conform-to/zod npmFrom 1.0.01.1.1

How do I fix CVE-2024-32866?

Upgrade @conform-to/dom to a fixed version for your release line: 0.9.2 or 1.1.1.

Is CVE-2024-32866 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-32866 exists.

Sources

Also known as GHSA-624g-8qjg-8qxf.

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