CVE-2025-3197: Prototype Pollution (CVSS 7.3)

Description

Versions of the package expand-object from 0.0.0 are vulnerable to Prototype Pollution in the expand() function in index.js. This function expands the given string into an object and allows a nested property to be set without checking the provided keys for sensitive properties like __proto__.

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CVSS v3.1 Score

7.3

HIGH

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

Weakness Type (CWE)

CWE-1321 CWE-1321

References

Other References

https://gist.github.com/miguelafmonteiro/d8f66af61d14e06338b688f90c4dfa7c https://github.com/jonschlinkert/expand-object/blob/master/index.js%23L13 https://security.snyk.io/vuln/SNYK-JS-EXPANDOBJECT-5821390 https://security.snyk.io/vuln/SNYK-JS-EXPANDOBJECT-5821390

Frequently Asked Questions

What is CVE-2025-3197? +

Versions of the package expand-object from 0.0.0 are vulnerable to Prototype Pollution in the expand() function in index.js. This function expands the given string into an object and allows a nested property to be set without checking the provided keys for sensitive properties like __proto__. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-3197? +

CVE-2025-3197 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-3197? +

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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