Vulnerability Description
JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.0, the src/functions.js lookup function lacked an Object.prototype.hasOwnProperty check and allowed crafted expressions to access inherited prototype members. An attacker able to supply an expression could use inherited prototype setters and getters, constructor access, valueOf, and process.getBuiltinModule to reach the child_process module and execute arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.0.
Related Weaknesses (CWE)
References
- https://github.com/jsonata-js/jsonata/commit/4b217d514376e30cba278941298d7ba97c4
- https://github.com/jsonata-js/jsonata/commit/4c5f4adfb90a9b500889d50f90050ca6888
- https://github.com/jsonata-js/jsonata/pull/794
- https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8
- https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0
- https://github.com/jsonata-js/jsonata/security/advisories/GHSA-8gq3-vp5j-2grp
FAQ
What is CVE-2026-77413?
CVE-2026-77413 is a documented vulnerability. JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.0, the src/functions.js lookup function lacked an Object.prototype.hasOwnProperty check and allowed crafted expressions to a...
How severe is CVE-2026-77413?
CVSS scoring is not yet available for CVE-2026-77413. Check NVD for updates.
Is there a patch for CVE-2026-77413?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.