CVE-2026-35592 Details
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.
A path traversal vulnerability has been identified in pyLoad versions 0.4.x and prior, specifically within the '_safe_extractall()' function of the UnTar extractor. The vulnerability arises because the function uses 'os.path.commonprefix()' for path traversal validation, which compares strings at a character level instead of a path level. This flaw allows a specially crafted tar archive to extract files outside the designated directory. Although the correct 'os.path.commonpath()' function was introduced in a previous fix, it was not applied to '_safe_extractall()', leaving the vulnerability unaddressed. The issue is now resolved in pyLoad version 0.5.0b3.dev97.
Users should update to pyLoad version 0.5.0b3.dev97, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 8, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/pyload/pyload/security/advisories/GHSA-mvwx-582f-56r7 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pyload-ng project pyload-ng | <= 0.5.0b3.dev96 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 16, 2026 | Reanalysis | [email protected] |
| Apr 16, 2026 | Initial Analysis | [email protected] |
| Apr 7, 2026 | New CVE Received | [email protected] |