← Vulnerability feed

Vulnerability record · CVE-2026-33509 · published 24 March 2026

CVE-2026-33509: Pyload improper privilege management vulnerability

Pyload · Pyload

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.

8.8 CVSS 3.1 High EPSS 0.58% · top 54.4% CWE-269 · Improper privilege management
8.8CVSS 3.1 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx ExploitMitigationVendor Advisory

Track CVE-2026-33509 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-54802Pyload-ng project pyload-ng path traversal vulnerabilitypyLoad is the free and open-source Download Manager written in pure Python. In versions 0.5.0b3.dev89 and below, there is an opportunity for path tra…EPSS 1.2%9.8CVE-2023-0435Pyload vulnerabilityExcessive Attack Surface in GitHub repository pyload/pyload prior to 0.5.0b3.dev41.EPSS 0.73%9.8CVE-2023-0297pyLoad code injection allows unauthenticated remote code executionpyLoad before 0.5.0b3.dev31 contains a code injection flaw (CWE-94) in its js2py-based JavaScript handling. Because the vulnerable path is reachable …EPSS 96%analysed9.3CVE-2026-35459Pyload-ng project pyload-ng server-side request forgery (ssrf) vulnerabilitypyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vu…EPSS 0.38%9.3CVE-2026-33992Pyload server-side request forgery (ssrf) vulnerabilitypyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, PyLoad's download engine accepts arbitrary URLs …EPSS 0.45%8.8CVE-2026-41133Pyload insufficient session expiration vulnerabilitypyLoad is a free and open-source download manager written in Python. Versions up to and including 0.5.0b3.dev97 cache `role` and `permission` in the …EPSS 0.47%8.8CVE-2026-35463Pyload-ng project pyload-ng os command injection vulnerabilitypyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the ADMIN_ONLY_OPTIONS protection mechanism restri…EPSS 0.91%8.8CVE-2026-33511Pyload insecure direct object reference vulnerabilitypyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator i…EPSS 0.62%

Source: NIST National Vulnerability Database (record CVE-2026-33509), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.