CVE-2026-52746: Jsonata

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

JSONata is a JSON query and transformation language. Prior to 2.2.0 and 1.8.9, malicious non-matching inputs to the $toMillis function can cause superlinear backtracking in the ISO-8601 validation regex, leading to denial of service in applications that evaluate user-provided JSONata expressions. This issue is fixed in version 2.2.0 and 1.8.9.

Affected products

• Jsonata Jsonata: before 2.2.0 (fixed in 2.2.0)

Published 2026-07-17. Last modified 2026-08-03.