VULNERABILITY INTELLIGENCE
CVE-2026-77413
EPSS probability0.72%
CISA KEVNot currently listed
Published2026-08-21
Last modified2026-10-12
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.
Weakness classification
- security-advisories@github.com: CWE-94