CVE CVE-2026-52746

CVE-2026-52746

Express

Severity: HIGH
CVSS: 7.5CVSS
Published: 2026-07-17
Last modified: 2026-07-17
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-1333

Description

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.

References

https://github.com/jsonata-js/jsonata/commit/80ba95d170f74e3f20f4f36b8b77d8c85cea7686
https://github.com/jsonata-js/jsonata/commit/d6ffc17cb16a8e53c222205bd274624e919cce0b
https://github.com/jsonata-js/jsonata/pull/782
https://github.com/jsonata-js/jsonata/pull/793
https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0
https://github.com/jsonata-js/jsonata/security/advisories/GHSA-86vw-mfpg-wwv9

Summary

Description

References