CVE-2026-35187

pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).

• CWE-918

• https://github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1fPatch
• https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33Exploit, Mitigation, Vendor Advisory
• https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33Exploit, Mitigation, Vendor Advisory

Published

Apr 6, 2026

Last Modified

Jul 24, 2026

Status

Analyzed

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