CVE-2025-57318: csvjson vulnerable to prototype injection

September 24, 2025 (updated September 26, 2025)

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.

References

github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/csvjson%405.1.0/index.js
github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57318
github.com/advisories/GHSA-xq4f-3jxp-qv6m
github.com/pradeep-mishra/csvjson
nvd.nist.gov/vuln/detail/CVE-2025-57318

Code Behaviors & Features

Detect and mitigate CVE-2025-57318 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →