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CVE-2026-33509— pyload-ng: SETTINGS Permission Users Can Achieve Remote Code Execution via Unrestricted Reconnect Script Configuration

Quick assessment

Affected
pyload pyload
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pyLoad是pyLoad开源的一个用 Python 编写的免费开源下载管理器。 pyLoad 0.4.0版本至0.5.0b3.dev97之前版本存在安全漏洞，该漏洞源于set_config_value API端点允许具有非管理员SETTINGS权限的用户无限制修改任何配置选项，可能导致远程代码执行。

CVSS 7.5 · High EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-33509

Vulnerability Information
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Vulnerability Title
pyload-ng: SETTINGS Permission Users Can Achieve Remote Code Execution via Unrestricted Reconnect Script Configuration
Source: CVE Program / CVE List V5
Vulnerability Description
pyLoad is a free and open-source download manager written in Python. From version 0.4.0 to before version 0.5.0b3.dev97, the set_config_value() API endpoint allows users with the non-admin SETTINGS permission to modify any configuration option without restriction. The reconnect.script config option controls a file path that is passed directly to subprocess.run() in the thread manager's reconnect logic. A SETTINGS user can set this to any executable file on the system, achieving Remote Code Execution. The only validation in set_config_value() is a hardcoded check for general.storage_folder — all other security-critical settings including reconnect.script are writable without any allowlist or path restriction. This issue has been patched in version 0.5.0b3.dev97.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
pyLoad 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pyLoad是pyLoad开源的一个用 Python 编写的免费开源下载管理器。 pyLoad 0.4.0版本至0.5.0b3.dev97之前版本存在安全漏洞，该漏洞源于set_config_value API端点允许具有非管理员SETTINGS权限的用户无限制修改任何配置选项，可能导致远程代码执行。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pyload pyload >= 0.4.0, < 0.5.0b3.dev97 -

II. Public POCs for CVE-2026-33509

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III. Intelligence Information for CVE-2026-33509

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Vendor Advisories for CVE-2026-33509 (1)

Same Patch Batch · pyload · 2026-03-24 · 3 CVEs total

CVE-2026-33314 6.5 MEDIUM pyload-ng: Improper Authentication and Origin Validation Error
CVE-2026-33511 pyload-ng: Authentication Bypass via Host Header Injection in ClickNLoad

IV. Related Vulnerabilities

Same product: pyload
Same vendor: pyload
Same weakness: CWE-269

V. Comments for CVE-2026-33509

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