CVE-2025-3197 | THREATINT

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__.

Reserved 2025-04-03 | Published 2025-04-04 | Updated 2025-04-04 | Assigner snyk

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:PHIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Problem types

Prototype Pollution

Credits

Miguel Monteiro

References

security.snyk.io/vuln/SNYK-JS-EXPANDOBJECT-5821390

gist.github.com/...monteiro/d8f66af61d14e06338b688f90c4dfa7c

github.com/...linkert/expand-object/blob/master/index.js#L13

cve.org (CVE-2025-3197)

nvd.nist.gov (CVE-2025-3197)

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