CVE-2026-33509 Details
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.
A remote code execution vulnerability exists in pyLoad versions 0.4.0 prior to 0.5.0b3.dev97. The issue arises in the `set_config_value()` API endpoint, where users with non-admin SETTINGS permission can modify configuration options without restriction. Specifically, the `reconnect.script` option, which controls a file path executed by `subprocess.run()` in the thread manager's reconnect logic, can be set to any executable file on the system. This vulnerability allows for arbitrary code execution, as the only validation in `set_config_value()` is a hardcoded check for the `general.storage_folder` option. All other security-critical settings, including `reconnect.script`, can be modified freely. The vulnerability has been patched in pyLoad version 0.5.0b3.dev97.
Users are advised to update to pyLoad version 0.5.0b3.dev97 or later. For those unable to update, consider removing or restricting the SETTINGS permission for users who do not require it.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx | [email protected] | ExploitMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-269 | Improper Privilege Management | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pyload pyload | >= 0.4, <= 0.4.20 |
CPE
Remediation
| |
| pyload-ng project pyload-ng | >= 0.5.0a5.dev528, < 0.5.0b3.dev97 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 26, 2026 | Initial Analysis | [email protected] |
| Mar 24, 2026 | New CVE Received | [email protected] |