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CVE-2026-77415

JSONata: Arbitrary Code Execution via crafted JSONata expressions PUBLISHED

Description (CNA)

JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.1, crafted JSONata expressions could chain several object-integrity weaknesses to execute arbitrary code. The chain could overwrite $clone to mutate objects through evaluateTransformExpression, expose and deconstruct JSONata functions or lambdas through $merge.*, replace proc.arguments.forEach used by applyProcedure, and forge internal lambda state. These primitives allowed an attacker to reach prototype getters, prototype and constructor access, and process.getBuiltinModule with child_process, executing code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.1.

Affected (CNA)

Vendor / productVersions
jsonata-js / jsonataaffected < 1.8.8; affected >= 2.0.0, < 2.2.1

CWE

CWE-94

References

ADP enrichment

CISA-ADP

No English description supplied.