CVE-2026-42315: pyLoad: Path Traversal via Package Folder Name in set_package_data

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-11 · updated 2026-06-17
Weakness: CWE-22

Description

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, when passing a folder name in the set_package_data() API function call inside the data object with key "_folder", there is no sanitization at all, allowing a user with Perms.MODIFY to specify arbitrary directories as download locations for a package. This vulnerability is fixed in 0.5.0b3.dev100.

Affected products

pyload: before 0.5.0b3.dev100 — fixed in 0.5.0b3.dev100

How to fix

Upgrade to a fixed version: pyload 0.5.0b3.dev100. Check the vendor advisory for mitigations.

References

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