Vulnerability · Published May 28, 2026 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity security flaw in pyload from pyload. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 85.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	pyload-ng	no fix listed	GHSA-w727-595x-pc3r
PyPI	pyload-ng	no fix listed	PYSEC-2026-2998

Affected products (as reported)

Vendor	Product	Versions
pyload	pyload	< 0.5.0b3.dev100

Weakness: CWE-706 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

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