CRITICALCVE-2026-35459Published Modified CNA GitHub_M
CVE-2026-35459: pyLoad has SSRF fix bypass via HTTP redirect
pyLoad 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) vulnerability. The fix for CVE-2026-33992 added IP validation to BaseDownloader.download() that checks the hostname of the initial download URL. However, pycurl is configured with FOLLOWLOCATION=1 and MAXREDIRS=10, causing it to automatically follow HTTP redirects. Redirect targets are never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address.
Metrics
- CVSS v4.0
- 9.3
- Severity
- CRITICAL
- Fixed in
- —
- Affected Products
- 1
Affected packages
- pyload / pyload<= 0.5.0b3.dev96
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N