CVE-2025-57327: spmrc Prototype Pollution (CVSS 7.5)

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-1321 CWE-1321

Affected Products

Vendor	Product	Versions
spmjs	spmrc	< 1.2.0

References

Other References

https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/spmrc%401.2.0/index.js https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57327

Frequently Asked Questions

What is CVE-2025-57327? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-57327? +

CVE-2025-57327 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-57327? +

CVE-2025-57327 affects products from spmjs, specifically: spmrc. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-57327? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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