Path Traversal in Pyload
CVE-2026-35592
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Pyload — versions < 0.5.0b3.dev97
- Pyload-Ng Project
Weakness classification (CWE)
References
- github.com/pyload/pyload/security/advisories/GHSA-mvwx-582f-56r7 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-35592?
- CVE-2026-35592 is a medium-severity vulnerability in Pyload, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-04-07.
- How severe is CVE-2026-35592?
- Medium severity. CVSS v3 base score is 5.3 out of 10.