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CVE-2026-52746— JSONata: Malicious inputs to "$toMillis" function can cause resource exhaustion

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-js jsonata是jsonata-js组织的一款JSON查询与转换的表达式引擎。 jsonata-js jsonata 2.2.0之前版本存在资源管理错误漏洞，该漏洞源于$toMillis函数中ISO-8601验证正则表达式在接收到恶意不匹配输入时引发超线性回溯，可能导致拒绝服务。

CVSS 7.5 · High EPSS 0.38% · P31

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
jsonata-js jsonata >= 2.0.0, < 2.2.0 affected
< 1.8.9 affected
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I. Basic Information for CVE-2026-52746

Vulnerability Information
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Vulnerability Title
JSONata: Malicious inputs to "$toMillis" function can cause resource exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
JSONata is a JSON query and transformation language. Prior to 2.2.0 and 1.8.9, malicious non-matching inputs to the $toMillis function can cause superlinear backtracking in the ISO-8601 validation regex, leading to denial of service in applications that evaluate user-provided JSONata expressions. This issue is fixed in version 2.2.0 and 1.8.9.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
jsonata-js jsonata 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jsonata-js jsonata是jsonata-js组织的一款JSON查询与转换的表达式引擎。 jsonata-js jsonata 2.2.0之前版本存在资源管理错误漏洞，该漏洞源于$toMillis函数中ISO-8601验证正则表达式在接收到恶意不匹配输入时引发超线性回溯，可能导致拒绝服务。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jsonata-js jsonata >= 2.0.0, < 2.2.0 -

II. Public POCs for CVE-2026-52746

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 20890 chars
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III. Intelligence Information for CVE-2026-52746

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Patches & Fixes for CVE-2026-52746 (5)

Vendor Advisories for CVE-2026-52746 (1)

Vendor Pages for CVE-2026-52746 (1)

IV. Related Vulnerabilities

Same product: jsonata
Same vendor: jsonata-js
Same weakness: CWE-1333

V. Comments for CVE-2026-52746

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