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.
Weakness
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Potential Mitigations
Related Attack Patterns
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/v2.2.0
- https://github.com/jsonata-js/jsonata/security/advisories/GHSA-86vw-mfpg-wwv9