CVE-2026-52746

HIGH 7.5

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

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-1333
Vendor	jsonata-js
Product	jsonata
Published	Jul 17, 2026
Last Updated	Jul 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

jsonata-js / jsonata

< 2.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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