CVE-2026-33511 is a critical vulnerability affecting pyLoad, an open-source download manager, in versions 0.4.20 up to 0.5.0b3.dev97. This flaw allows unauthenticated remote attackers to bypass the local_check decorator in the ClickNLoad feature through HTTP Host header spoofing. With a CVSS score of 9.8 (Critical), this enables attackers to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code, leading to full system compromise. There is currently no evidence of active exploitation or public exploit tools, and community discussion remains minimal. Organizations using affected pyLoad versions should upgrade to 0.5.0b3.dev97 or later immediately.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.4.20CPE matchmatch criteria | cpe:2.3:a:pyload:pyload:*:*:*:*:*:*:*:* | ||
>= 0.5.0a5.dev528, < 0.5.0b3.dev97CPE matchmatch criteria | cpe:2.3:a:pyload-ng_project:pyload-ng:*:*:*:*:*:python:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.