CVE-2026-35592
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pyload-ngPyPI | < 0.5.0b3.dev97 | 0.5.0b3.dev97 |
Affected products
2Patches
Vulnerability mechanics
References
4- github.com/pyload/pyload/security/advisories/GHSA-mvwx-582f-56r7nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-mvwx-582f-56r7ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35592ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/pyload-ng/PYSEC-2026-124.yamlghsaWEB
News mentions
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