CVE-2026-77414

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 a...

GHSA-2943-5XFG-GQ5F JSONata vulnerable to Arbitrary Code Execution via crafted JSONata expressions

Before JSONata 2.2.1 and 1.8.8 it was possible to execute arbitrary code with crafted expressions, due to a bypassable hasOwnProperty check in environment.lookup https://github.com/jsonata-js/jsonata/blob/8ee4476f8a228bfc7a62979ae0a9c13a4043cd03/src/jsonata.jsL1863-L1871 This was fixed in...

JSONata vulnerable to Arbitrary Code Execution via crafted JSONata expressions

Before JSONata 2.2.1 and 1.8.8 it was possible to execute arbitrary code with crafted expressions, due to a bypassable hasOwnProperty check in environment.lookup https://github.com/jsonata-js/jsonata/blob/8ee4476f8a228bfc7a62979ae0a9c13a4043cd03/src/jsonata.jsL1863-L1871 This was fixed in...

EUVD-2026-64083

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 a...

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 expressions could use $hasOwnProperty, $spread, $string, prototype access, and $constructor to reach the object prototype a...

Arbitrary Code Execution

SandboxJS is vulnerable to a sandbox escape vulnerability. The vulnerability is due to inconsistent key validation during property access, where the key is sanitized using hasOwnPropertykey but not strictly enforced as a string, allowing attackers to supply crafted objects that coerce to differen...