🛡️ CVE-2026-33511
🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-639 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-639
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-24
Updated 2026-06-02
Modified 2026-03-26
Fix URL N/A

Affected Packages

Software From version Fixed in
pyload 0.4.20
pyload-ng 0.5.0a5.dev528 0.5.0b3.dev97

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