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CVE-2026-45302

8.2 · HIGH

parse-nested-form-data is a tiny node module for parsing FormData by name into objects and arrays.

Published Jun 1, 2026CWE-1321EPSS 0.56%

Overview

CVE-2026-45302 is a high-severity vulnerability. It was published on June 1, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

parse-nested-form-data is a tiny node module for parsing FormData by name into objects and arrays. Prior to version 1.0.1, parseFormData() walks bracket and dot-notation FormData field names into nested objects without filtering reserved property keys. A single FormData field whose name begins with __proto__, or contains .__proto__. mid-path, causes the parser to traverse onto Object.prototype and assign properties there, polluting the prototype chain of every plain object in the running process. This issue has been patched in version 1.0.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/milamer/parse-nested-form-data/commit/527ad58eb486e32438f7198fb88315c20449d792GitHubgithub.com/milamer/parse-nested-form-data/releases/tag/v1.0.1GitHubgithub.com/milamer/parse-nested-form-data/security/advisories/GHSA-xp7r-j8r6-j9h3GitHubgithub.com/milamer/parse-nested-form-data/security/advisories/GHSA-xp7r-j8r6-j9h3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45302?

CVE-2026-45302 is a high-severity vulnerability. It was published on June 1, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-45302?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45302?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45302?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45302 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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