SSRF in Pyload
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).
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Pyload — versions <= 0.5.0b3.dev96
- Pyload-Ng Project
Weakness classification (CWE)
References
- github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33 (Exploit, Mitigation, Vendor Advisory)
- github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1f (Patch)
Frequently asked questions
- What is CVE-2026-35187?
- CVE-2026-35187 is a high-severity vulnerability in Pyload, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-04-06.
- How severe is CVE-2026-35187?
- High severity. CVSS v3 base score is 7.7 out of 10.