CVE-2026-52746 HIGH

CVE-2026-52746: JSONata: Malicious inputs to "$toMillis" function can cause resource exhaustion

Vendor Jsonata-Js

Product jsonata

Weakness CWE-1333

Published July 17, 2026

Last update July 17, 2026

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

JSONata is a JSON query and transformation language. Prior to 2.2.0, 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.

Key dates

02Disclosure timeline

July 17, 2026 CVE published

July 17, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-52746 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/1333.html AskarLabs — CWE-1333 write-up Inefficient Regular Expression Complexity (ReDoS)