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EUVD-2026-290404

fkie_cve-2026-40071

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the /json/package_order, /json/link_order, and /json/abort_link WebUI JSON endpoints enforce weaker permissions than the core API methods they invoke. This allows authenticated low-privileged users to execute MODIFY operations that should be denied by pyLoad's own permission model. This vulnerability is fixed in 0.5.0b3.dev97.

GHSA-rfgh-63mg-8pwm — pyload-ng has a WebUI JSON permission mismatch that lets ADD/DELETE users invoke MODIFY-only actions

Affected: PyPI: pyload-ng

### Summary Several WebUI JSON endpoints enforce weaker permissions than the core API methods they invoke. This allows authenticated low-privileged users to execute `MODIFY` operations that should be denied by pyLoad's own permission model.

Confirmed mismatches: - `ADD` user can reorder packages/files (`order_package`, `order_file`) via `/json/package_order` and `/json/link_order` - `DELETE` user can abort downloads (`stop_downloads`) via `/json/abort_link`

### Details pyLoad defines granular permissions in core API: - `order_package` requires `Perms.MODIFY` (`src/pyload/core/api/__init__.py:1125`) - `order_file` requires `Perms.MODIFY` (`src/pyload/core/api/__init__.py:1137`) - `stop_downloads` requires `Perms.MODIFY` (`src/pyload/core/api/__init__.py:1046`)

But WebUI JSON routes use weaker checks: - `/json/package_order` uses `@login_required("ADD")` then calls `api.order_package(...)` (`src/pyload/webui/app/blueprints/json_blueprint.py:109-117`) - `/json/link_order` uses `@login_required("ADD")` then calls `api.order_file(...)` (`src/pyload/webui/app/blueprints/json_blueprint.py:137-145`) - `/json/abort_link` uses `@login_required("DELETE")` then calls `api.stop_downloads(...)` (`src/pyload/webui/app/blueprints/json_blueprint.py:123-131`)

Why this is likely unintended (not just convenience): - The same JSON blueprint correctly protects other edit actions with `MODIFY`: - `/json/move_package` -> `@login_required("MODIFY")` (`json_blueprint.py:188-196`) - `/json/edi…

PYSEC-2026-2997 — pyload-ng has a WebUI JSON permission mismatch that lets ADD/DELETE users invoke MODIFY-only actions

Affected: PyPI: pyload-ng