What is GHSA-hj76-42vx-jwp4?

GHSA-hj76-42vx-jwp4 is a security advisory published by GitHub Security Advisories with High severity. seroval Affected by Prototype Pollution via JSON Deserialization

Which CVE IDs does GHSA-hj76-42vx-jwp4 cover?

GHSA-hj76-42vx-jwp4 covers the following CVE IDs: CVE-2026-23736. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hj76-42vx-jwp4?

GHSA-hj76-42vx-jwp4 has a CVSS v3 base score of 7.3, published by GitHub Security Advisories.

Which products are affected by GHSA-hj76-42vx-jwp4?

GHSA-hj76-42vx-jwp4 affects 1 product, including: npm/seroval:\u003c 1.4.1.

GHSA-hj76-42vx-jwp4HighCVSS 7.3

seroval Affected by Prototype Pollution via JSON Deserialization

Vendor

GitHub Security Advisories

Published

January 21, 2026

Last Modified

January 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-23736 →

📋 Description

Due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This affects only JSON deserialization functionality.

As there is no known workaround, please upgrade to the latest version.

🎯 Affected products1

npm/seroval:< 1.4.1

🔗 References (4)

https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4
https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060
https://nvd.nist.gov/vuln/detail/CVE-2026-23736
https://github.com/advisories/GHSA-hj76-42vx-jwp4