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CVE-2026-77414

CVE-2026-77414 · JSONata: Arbitrary Code Execution via crafted JSONata expressions

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.3 · Critical · EPSS 0.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • jsonata

    Versions
    • < 1.8.8: Affected
    • >= 2.0.0, < 2.2.1: Affected

    No fix published

  • jsonata npm

    Affected ranges
    • SEMVER: ≥ 2.0.0, < 2.2.1

    Update to 2.2.1

  • jsonata npm

    Affected ranges
    • SEMVER: < 1.8.8

    Update to 1.8.8

Original sources

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