CVE-2025-50578 is a critical vulnerability affecting LinuxServer.io Heimdall 2.6.3-ls307, stemming from insufficient validation of X-Forwarded-Host and Referer HTTP headers. This allows unauthenticated attackers to perform Host Header Injection and Open Redirect attacks. With a CVSS score of 9.8, the vulnerability is easily exploitable over the network with low complexity, potentially leading to phishing, UI redress, and session theft. There is no known active exploitation or public exploit code, but the vulnerability has garnered some community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.6.3-ls307CPE matchmatch criteria | cpe:2.3:a:linuxserver:docker-heimdall:2.6.3-ls307:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.