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CVE-2026-77415— JSONata: Arbitrary Code Execution via crafted JSONata expressions

Quick assessment

Affected
jsonata-js jsonata
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

JSONata 是一种 JSON 查询和转换语言。在版本 1.8.8 和 2.2.1 之前，精心构造的 JSONata 表达式可以利用多个对象完整性缺陷链，从而执行任意代码。该漏洞利用链能够： 通过 覆盖 以篡改对象； 通过 暴露并拆解 JSONata 函数或 Lambda 表达式； 替换 所依赖的 ； 伪造内部 Lambda 状态。 这些底层机制使攻击者能够访问原型 getter、原型对象及构造函数，并通过 模块调用 ，从而以宿主进程的权限执行任意代码。 该问题已在版本 1.8.8 和 2.2.1 中修复。

CVSS 9.3 · Critical EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
jsonata-js jsonata < 1.8.8 affected
>= 2.0.0, < 2.2.1 affected
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I. Basic Information for CVE-2026-77415

Vulnerability Information
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Vulnerability Title
JSONata: Arbitrary Code Execution via crafted JSONata expressions
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
jsonata-js jsonata < 1.8.8 -

II. Public POCs for CVE-2026-77415

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7717 chars
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III. Intelligence Information for CVE-2026-77415

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Patches & Fixes for CVE-2026-77415 (9)

Vendor Advisories for CVE-2026-77415 (1)

Vendor Pages for CVE-2026-77415 (1)

Same Patch Batch · jsonata-js · 2026-08-21 · 3 CVEs total

CVE-2026-77413 9.3 CRITICAL JSONata: Arbitrary Code Execution via crafted JSONata expressions
CVE-2026-77414 9.3 CRITICAL JSONata: Arbitrary Code Execution via crafted JSONata expressions

IV. Related Vulnerabilities

Same product: jsonata
Same vendor: jsonata-js
Same weakness: CWE-94

V. Comments for CVE-2026-77415

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