CVE-2026-77413

UNKNOWN 0.0

JSONata: Arbitrary Code Execution via crafted JSONata expressions

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-94
Vendor	jsonata-js
Product	jsonata
Published	Aug 21, 2026

Stay Ahead of the Next One

Get instant alerts for jsonata-js jsonata

Be the first to know when new unknown vulnerabilities affecting jsonata-js jsonata are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

jsonata-js / jsonata

< 2.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/jsonata-js/jsonata/security/advisories/GHSA-8gq3-vp5j-2grp github.com: https://github.com/jsonata-js/jsonata/pull/794 github.com: https://github.com/jsonata-js/jsonata/commit/4b217d514376e30cba278941298d7ba97c4a6c6e github.com: https://github.com/jsonata-js/jsonata/commit/4c5f4adfb90a9b500889d50f90050ca68888b50d github.com: https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8 github.com: https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0