Denial of Service Vulnerability in JSONata Prior to Version 2.2.0
CVE-2026-52746

7.5HIGH

Key Information:

Vendor

Jsonata-js

Status
Jsonata
Vendor
CVE Published:
17 July 2026

What is CVE-2026-52746?

The JSONata query and transformation language, prior to version 2.2.0, is susceptible to a denial of service attack. Malicious actors can exploit non-matching inputs to the $toMillis function, triggering superlinear backtracking in the ISO-8601 validation regular expressions. This results in significant performance degradation and potential service outages in applications that process user-provided JSONata expressions. Version 2.2.0 addresses this vulnerability, ensuring improved handling of inputs and enhanced stability.

Affected Version(s)

jsonata < 2.2.0

References

https://github.com/jsonata-js/jsonata/security/advisories...
x_refsource_CONFIRM
https://github.com/jsonata-js/jsonata/pull/782
x_refsource_MISC
https://github.com/jsonata-js/jsonata/pull/793
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.