Vulnerability 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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pyload-Ng Project | Pyload-Ng | < 0.5.0b3.dev97 |
Related Weaknesses (CWE)
References
- https://github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1fPatch
- https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33ExploitMitigationVendor Advisory
- https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-35187?
CVE-2026-35187 is a vulnerability with a CVSS score of 7.7 (HIGH). 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...
How severe is CVE-2026-35187?
CVE-2026-35187 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35187?
Check the references section above for vendor advisories and patch information. Affected products include: Pyload-Ng Project Pyload-Ng.