critical9.3
CVE-2026-77414
JSONata vulnerable to Arbitrary Code Execution via crafted JSONata expressions
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | jsonata | >= 2.0.0, < 2.2.1 | 2.2.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-2943-5xfg-gq5f
- https://github.com/jsonata-js/jsonata/security/advisories/GHSA-2943-5xfg-gq5f
- https://github.com/jsonata-js/jsonata/pull/799
- https://github.com/jsonata-js/jsonata/commit/59e25144fc3b7125f6befd71b8a6e14e1fa610d2
- https://github.com/jsonata-js/jsonata/commit/c41ef185136a7b96ca1049c7745a7503b82193de
- https://github.com/jsonata-js/jsonata/commit/f09df8416eab8ff44926fc6527c80fb8701de159
- https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8
- https://github.com/jsonata-js/jsonata/releases/tag/v2.2.1