JSONPath vulnerable to Prototype Pollution due to insufficient input validation of object keys in lib/index.js

CRITICAL 9.8CVE-2025-61140 · GHSA-6c59-mwgh-r2x6 · Published 28/01/2026 · updated 07/09/2026

In short

CVE-2025-61140 is a CRITICAL (CVSS 9.8) vulnerability affecting jsonpath (dchester), jsonpath.
Chance of exploitation in the next 30 days (EPSS): 0.53%, higher than 44.6% of all vulnerabilities.
Fix: update to 1.2.0 or later.

Package	Affected versions	Patched versions
jsonpath dchester	`= 1.1.1`	No fix yet
jsonpath npm	`< 1.2.0`	`1.2.0`

The value function in jsonpath 1.1.1 lib/index.js is vulnerable to Prototype Pollution.

NVD description

The value function in jsonpath 1.1.1 lib/index.js is vulnerable to Prototype Pollution.

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