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

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Summary

CVECVE-2026-52746
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 19:17:16 UTC
Updated2026-07-17 20:17:25 UTC
DescriptionJSONata 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

Problem Types: CWE-1333 | CWE-1333 CWE-1333: Inefficient Regular Expression Complexity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jsonata-js Jsonata affected < 2.2.0 Not specified

References

ReferenceSourceLinkTags
github.com/jsonata-js/jsonata/commit/d6ffc17cb16a8e53c222205bd274624e919... [email protected] github.com
github.com/jsonata-js/jsonata/commit/80ba95d170f74e3f20f4f36b8b77d8c85ce... [email protected] github.com
github.com/jsonata-js/jsonata/releases/tag/v2.2.0 [email protected] github.com
github.com/jsonata-js/jsonata/pull/793 [email protected] github.com
github.com/jsonata-js/jsonata/pull/782 [email protected] github.com
github.com/jsonata-js/jsonata/security/advisories/GHSA-86vw-mfpg-wwv9 [email protected] github.com
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