CVE-2026-52746
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 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-25)
- CWE
- CWE-1333
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jsonata:jsonata
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-86vw-mfpg-wwv9 | npm | jsonata | >=2.0.0 <2.2.0 | 2.2.0 |
| GHSA-86vw-mfpg-wwv9 | npm | jsonata | <1.8.9 | 1.8.9 |
References
- https://github.com/jsonata-js/jsonata/commit/80ba95d170f74e3f20f4f36b8b77d8c85cea7686
- https://github.com/jsonata-js/jsonata/commit/d6ffc17cb16a8e53c222205bd274624e919cce0b
- https://github.com/jsonata-js/jsonata/pull/782
- https://github.com/jsonata-js/jsonata/pull/793
- https://github.com/jsonata-js/jsonata/releases/tag/v1.8.9