CVE-2026-77414 — JSONata: Arbitrary Code Execution via crafted JSONata expressions
JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.1, the src/jsonata.js environment.lookup function used a bypassable hasOwnProperty check. Crafted exp…
Published: 2026-08-21 · CVSS: 9.3 · CVSS 4.0
JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.1, the src/jsonata.js environment.lookup function used a bypassable hasOwnProperty check. Crafted expressions could use $hasOwnProperty, $spread, $string, prototype access, and $constructor to reach the object prototype and invoke process.getBuiltinModule with child_process, executing arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7