High severityNVD Advisory· Published Sep 24, 2025· Updated Sep 25, 2025

CVE-2025-57318

Description

A Prototype Pollution vulnerability in the toCsv function of csvjson versions thru 5.1.0 allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.

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Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
csvjsonnpm	<= 5.1.0	—

Affected products

csvjson/csvjsoncpe-rescue
ghsa-coords
pkg:npm/csvjson
Range: <= 5.1.0

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-xq4f-3jxp-qv6mghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-57318ghsaADVISORY
github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/csvjson%405.1.0/index.jsghsaWEB
github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57318ghsaWEB

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