Description
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).
Affected products
pyload-ng_project: pyload-ng
References3
- github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33 ExploitMitigationVendor Advisory
- github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33 ExploitMitigationVendor Advisory
- github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb56752… Patch
Metrics
- CVSS 3.1
-
7.7
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 21 · as of 12 November 2026
- CWE
- CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.