CVE-2026-42796— Arelle < 2.39.10 Unauthenticated RCE via /rest/configure
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I. Basic Information for CVE-2026-42796
Vulnerability Information
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Vulnerability Title
Arelle < 2.39.10 Unauthenticated RCE via /rest/configure
Source: NVD (National Vulnerability Database)
Vulnerability Description
Arelle before 2.39.10 contains an unauthenticated remote code execution vulnerability in the /rest/configure REST endpoint that accepts a plugins query parameter and forwards it to the plugin manager without authentication or authorization. Attackers can supply a URL to a malicious Python file through the plugins parameter, causing the Arelle webserver to download and execute the attacker-controlled code within the Arelle process with its privileges.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Arelle 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arelle是Arelle开源的一个开源XBRL平台，支持数据验证与集成。 Arelle 2.39.10之前版本存在访问控制错误漏洞，该漏洞源于/rest/configure REST端点接受plugins查询参数并转发给插件管理器而未进行身份验证或授权，可能导致未经身份验证的远程代码执行。
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
II. Public POCs for CVE-2026-42796
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IV. Related Vulnerabilities
Same weakness: CWE-306
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