Vulnerability library
Security checkAugust 21, 2026

JSONata vulnerable to Arbitrary Code Execution via crafted JSONata expressions - jsonata

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High severitynpmjsonata

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Description

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.js#L1863-L1871

This was fixed in https://github.

Recommendation

Update the jsonata package to the latest compatible version. Followings are version details:

  • Affected version(s): **< 1.8.8 >= 2.0.0, < 2.2.1**
  • Patched version(s): **1.8.8 2.2.1**

References

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See something that needs correcting? Let us knowUpdated August 21, 2026