CVE-2019-19507

Published December 2nd, 2019

View on NVD ↗

CVSS v3

5.3

MEDIUM

CVSS v2

MEDIUM

Affected

PROJECTS

Description

In jpv (aka Json Pattern Validator) before 2.1.1, compareCommon() can be bypassed because certain internal attributes can be overwritten via a conflicting name, as demonstrated by 'constructor': {'name':'Array'}. This affects validate(). Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.

jpv

Flexible and powerful JSON pattern validation library with support for complex, nested structures, array validation, and a wide range of validation patterns. Includes logical operators and strict/nullable types.

NPM

mankhn/jpv

Json Pattern Validator

GitHub