CVE-2025-57327: spmrc vulnerable to prototype pollution

September 24, 2025 (updated November 10, 2025)

spmrc is a package that provides the rc manager for spm. A Prototype Pollution vulnerability in the set and config function of spmrc version 1.2.0 and before 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/spmrc%401.2.0/index.js
github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57327
github.com/advisories/GHSA-r2rv-8pp3-65xw
github.com/spmjs/spmrc
nvd.nist.gov/vuln/detail/CVE-2025-57327

Code Behaviors & Features

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