CVE-2020-7766

critical

Description

This affects all versions of package json-ptr. The issue occurs in the set operation (https://flitbit.github.io/json-ptr/classes/_src_pointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.

References

https://snyk.io/vuln/SNYK-JS-JSONPTR-1016939

https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038396

https://github.com/flitbit/json-ptr/blob/master/src/util.ts%23L174

Details

Source: Mitre, NVD

Published: 2020-11-10

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.01064