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CVE-2026-77413— 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 是一种用于 JSON 查询和转换的语言。在版本 1.8.8 及 2.2.0 之前，src/functions.js 中的 lookup 函数缺少对 Object.prototype.hasOwnProperty 的检查，使得精心构造的表达式可以访问继承的 prototype 成员。攻击者若能提供恶意表达式，即可利用继承的 prototype 的 setter 和 getter、构造函数访问、valueOf 以及 process.getBuiltinModule 等方法访问 child_process

CVSS 9.3 · Critical EPSS 0.41% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
jsonata-js jsonata < 2.2.0 affected
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I. Basic Information for CVE-2026-77413

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 2.2.0, the src/functions.js lookup function lacked an Object.prototype.hasOwnProperty check and allowed crafted expressions to access inherited prototype members. An attacker able to supply an expression could use inherited prototype setters and getters, constructor access, valueOf, and process.getBuiltinModule to reach the child_process module and execute arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.0.
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 < 2.2.0 -

II. Public POCs for CVE-2026-77413

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6435 chars
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III. Intelligence Information for CVE-2026-77413

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Patches & Fixes for CVE-2026-77413 (4)

Vendor Advisories for CVE-2026-77413 (1)

Vendor Pages for CVE-2026-77413 (1)

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

CVE-2026-77414 9.3 CRITICAL JSONata: Arbitrary Code Execution via crafted JSONata expressions
CVE-2026-77415 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-2026-77413

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