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CVE-2024-27307— JSONata expression can pollute the "Object" prototype

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。 JSONata 1.4.0版本至2.0.4之前版本存在安全漏洞，该漏洞源于恶意表达式可以使用转换运算符覆盖对象构造函数和原型上的属性，这可能会导致拒绝服务、远程代码执行或其他意外行为。

CVSS 9.8 · Critical EPSS 1.42% · P73
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I. Basic Information for CVE-2024-27307

Vulnerability Information
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Vulnerability Title
JSONata expression can pollute the "Object" prototype
Source: CVE Program / CVE List V5
Vulnerability Description
JSONata is a JSON query and transformation language. Starting in version 1.4.0 and prior to version 1.8.7 and 2.0.4, a malicious expression can use the transform operator to override properties on the `Object` constructor and prototype. This may lead to denial of service, remote code execution or other unexpected behavior in applications that evaluate user-provided JSONata expressions. This issue has been fixed in JSONata versions 1.8.7 and 2.0.4. Applications that evaluate user-provided expressions should update ASAP to prevent exploitation. As a workaround, one may apply the patch manually.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
JSONata 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JSONata是一种 JSON 查询和转换语言。 JSONata 1.4.0版本至2.0.4之前版本存在安全漏洞，该漏洞源于恶意表达式可以使用转换运算符覆盖对象构造函数和原型上的属性，这可能会导致拒绝服务、远程代码执行或其他意外行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
jsonata-js jsonata >= 1.4.0, < 1.8.7 -

II. Public POCs for CVE-2024-27307

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 10610 chars
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III. Intelligence Information for CVE-2024-27307

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Patches & Fixes for CVE-2024-27307 (3)

Vendor Advisories for CVE-2024-27307 (1)

Other References for CVE-2024-27307 (1)

IV. Related Vulnerabilities

Same product: jsonata
Same vendor: jsonata-js
Same weakness: CWE-1321