Validation bypass in jpv

CRITICAL 9.8CVE-2020-17479 · GHSA-vh6r-g38f-q3w8 · Published 10/08/2020 · updated 17/06/2026

In short

CVE-2020-17479 is a CRITICAL (CVSS 9.8) vulnerability affecting json pattern validator (json pattern validator project), jpv.
Chance of exploitation in the next 30 days (EPSS): 2.5%, higher than 84.5% of all vulnerabilities.
Fix: update to 2.2.2 or later.

Package	Affected versions	Patched versions
json pattern validator json_pattern_validator_project	`< 2.2.2`	`2.2.2`
jpv npm	`< 2.2.2`	`2.2.2`

jpv (aka Json Pattern Validator) before 2.2.2 does not properly validate input, as demonstrated by a corrupted array.

NVD description

jpv (aka Json Pattern Validator) before 2.2.2 does not properly validate input, as demonstrated by a corrupted array.

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