CVE-2026-35464
Description
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.
How to fix
- pyload pyload2026-04-02 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pyload pyload | v < 2026-04-02 | 2026-04-02 |
| pyload-ngPyPI | v ≤ 0.5.0b3 | — |
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