Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jsonata | Jsonata | < 2.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/jsonata-js/jsonata/commit/80ba95d170f74e3f20f4f36b8b77d8c85cePatch
- https://github.com/jsonata-js/jsonata/commit/d6ffc17cb16a8e53c222205bd274624e919Patch
- https://github.com/jsonata-js/jsonata/pull/782Issue TrackingPatch
- https://github.com/jsonata-js/jsonata/pull/793Issue TrackingPatch
- https://github.com/jsonata-js/jsonata/releases/tag/v1.8.9
- https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0ProductRelease Notes
- https://github.com/jsonata-js/jsonata/security/advisories/GHSA-86vw-mfpg-wwv9PatchVendor Advisory
FAQ
What is CVE-2026-52746?
CVE-2026-52746 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 reg...
How severe is CVE-2026-52746?
CVE-2026-52746 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-52746?
Check the references section above for vendor advisories and patch information. Affected products include: Jsonata Jsonata.