[ CVE-2026-75597 · Published 9 Oct 2026 ]
pyLoad: Unauthenticated access to /web/<path:filename> bypasses authentication on sensitive templates and leaks internal error details via exception attribute typo
[ Why it matters ]Priority signals
- Public proof-of-concept exploit exists (CISA SSVC)
[ Description ]Official description
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, the `/web/<path:filename>` route in `src/pyload/webui/app/blueprints/app_blueprint.py` renders Jinja2 templates without any authentication requirement. Every equivalent direct route (`/logs`, `/settings`, `/queue`, `/dashboard`, etc.) is protected by `@login_required`, but the underlying templates for all of these pages are accessible unauthenticated via this endpoint. Combined with an exception attribute typo in `src/pyload/webui/app/handlers.py` (`exc.desc` instead of `exc.description`), internal Jinja2 variable names are leaked in HTTP 500 response bodies to unauthenticated callers. An attacker can also enumerate all valid template names by observing 200 vs 500 response differentiation. Version 0.5.0b3.dev101 contains a patch.
[ Fixes ]Fixes and patches
- pyload-ng 0.5.0b3.dev101Fixed version · GitHub Advisories · pip package pyload-ng: upgrade to 0.5.0b3.dev101 or later (affected <= 0.5.0b3.dev100)
[ Packages ]Affected open-source packages
- pyload-ng pipAffected <= 0.5.0b3.dev100 · fixed in 0.5.0b3.dev101 · GHSA-j92p-c242-7hfx