CRITICAL 9.3 NVD
CVE-2026-77413
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 ch
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.
References
- https://github.com/jsonata-js/jsonata/commit/4b217d514376e30cba278941298d7ba97c4a6c6e
- https://github.com/jsonata-js/jsonata/commit/4c5f4adfb90a9b500889d50f90050ca68888b50d
- 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
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-08-21 via NVD.
Risk Timeline
CVE Disclosed2026-08-21 · 0 days ago
Remediation Resources
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