CVE-2026-35464: Pyload

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

pyLoad is a free and open-source download manager written in Python. The fix for CVE-2026-33509 added an ADMIN_ONLY_OPTIONS set to block non-admin users from modifying security-critical config options. The storage_folder option is not in this set and passes the existing path restriction because the Flask session directory is outside both PKGDIR and userdir. A user with SETTINGS and ADD permissions can redirect downloads to the Flask filesystem session store, plant a malicious pickle payload as a predictable session file, and trigger arbitrary code execution when any HTTP request arrives with the corresponding session cookie. This vulnerability is fixed with commit c4cf995a2803bdbe388addfc2b0f323277efc0e1.

Affected products

• Pyload Pyload: before 2026-04-02 (fixed in 2026-04-02)

Published 2026-04-07. Last modified 2026-06-17.