What is CVE-2025-57327?

CVE-2025-57327 is a high-severity vulnerability in Spmjs Spmrc, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.5/10. Published 2025-09-24.

How severe is CVE-2025-57327?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2025-57327 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Prototype Pollution in Spmjs Spmrc

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.

Vulnerability class: Prototype Pollution

EPSS: 0.004 (29.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Spmjs Spmrc
N/a — versions n/a

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (Broken Link)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-57327?: CVE-2025-57327 is a high-severity vulnerability in Spmjs Spmrc, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.5/10. Published 2025-09-24.
How severe is CVE-2025-57327?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2025-57327 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.