5.3 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): HIGH
- Privileges required (PR): NONE
- User interaction (UI): REQUIRED
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): HIGH
- Availability impact (A): NONE
pyLoad has an Incomplete Tar Path Traversal Fix in UnTar._safe_extractall via os.path.commonprefix Bypass
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the _safe_extractall() function in src/pyload/plugins/extractors/UnTar.py uses os.path.commonprefix() for its path traversal check, which performs character-level string comparison rather than path-level comparison. This allows a specially crafted tar archive to write files outside the intended extraction directory. The correct function os.path.commonpath() was added to the codebase in the CVE-2026-32808 fix (commit 5f4f0fa) but was never applied to _safe_extractall(), making this an incomplete fix. This vulnerability is fixed in 0.5.0b3.dev97.
References
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https://github.com/pyload/pyload/security/advisories/GHSA-mvwx-582f-56r7 x_refsource_CONFIRM
Affected products
- ==< 0.5.0b3.dev97
Matching in nixpkgs
pkgs.pyload-ng
Free and open-source download manager with support for 1-click-hosting sites
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nixos-unstable 0.5.0b3.dev88
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nixos-25.11 0.5.0b3.dev88
- nixos-25.11-small 0.5.0b3.dev88
- nixpkgs-25.11-darwin 0.5.0b3.dev88
pkgs.python312Packages.pyloadapi
Simple wrapper for pyLoad's API
pkgs.python313Packages.pyloadapi
Simple wrapper for pyLoad's API
pkgs.python314Packages.pyloadapi
Simple wrapper for pyLoad's API
pkgs.home-assistant-component-tests.pyload
Open source home automation that puts local control and privacy first
pkgs.tests.home-assistant-component-tests.pyload
Open source home automation that puts local control and privacy first
Package maintainers
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@fabaff Fabian Affolter <mail@fabian-affolter.ch>
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@dotlambda ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FAEFB6177B4672DEE07F9D3AFC62588CCD2631EDCF22E8CCC1FB35B501C9C86 <nix@dotlambda.de>
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@mweinelt Martin Weinelt <hexa@darmstadt.ccc.de>
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@ruby0b ruby0b