CVE-2026-52746highCWE-1333

CVE-2026-52746: high-severity vulnerability in jsonata-js jsonata

JSONata: Malicious inputs to "$toMillis" function can cause resource exhaustion

Published · Updated

Follow this CVE+ Monitor jsonata+ Monitor jsonata

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.7%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
jsonata-js · jsonata
Related CVEs — jsonata-js jsonata

In the same product, most dangerous first.

CVE-2024-27307CRITICALJSONata expression can pollute the "Object" prototypeEPSS 1.4%CVE-2026-77415CRITICALJSONata: Arbitrary Code Execution via crafted JSONata expressionsEPSS 0.9%CVE-2026-77413CRITICALJSONata: Arbitrary Code Execution via crafted JSONata expressionsEPSS 0.7%CVE-2026-77414CRITICALJSONata: Arbitrary Code Execution via crafted JSONata expressionsEPSS 0.6%CVE-2026-12208MEDIUMjsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollutionEPSS 0.3%