CVE-2026-52746 | JSONata is a JSON query and transformation language. Prior t… | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-52746
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-08 14:00 UTC
Published: 2026-07-17 18:32 UTC
Last updated: 2026-07-17 19:44 UTC
Primary CWE: CWE-1333
CWE-1333: Inefficient Regular Expression Complexity
Vendor / Product: jsonata-js / jsonata
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
jsonata-js	jsonata	—	< 2.2.0

Weakness (CWE)

CWE	Source	Description
CWE-1333	cna	CWE-1333: Inefficient Regular Expression Complexity

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References (6)

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