CVE-2026-45306: pyLoad: Incomplete Fix for CVE-2026-33509 -storage_folder Bypass via Session Directory

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-06-17
Weakness: CWE-706

Description

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the fix for CVE-2026-33509 prevents setting storage_folder inside PKGDIR or userdir, but does NOT protect the Flask session directory (/tmp/pyLoad/flask). An authenticated attacker can set storage_folder to the session directory and download session files of other users via /files/get/, leading to account takeover. This vulnerability is fixed in 0.5.0b3.dev100.

Affected products

pyload: before 0.5.0b3.dev100

References

https://github.com/pyload/pyload/security/advisories/GHSA-w727-595x-pc3r
https://github.com/pyload/pyload/security/advisories/GHSA-w727-595x-pc3r

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