CVE-2020-17479: JSON Pattern Validator Project JSON Pattern Validator

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

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

Affected products

• JSON Pattern Validator Project JSON Pattern Validator: before 2.2.2 (fixed in 2.2.2)

Published 2020-08-10. Last modified 2026-06-17.