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CVE-2025-50578 is a critical severity vulnerability with a CVSS score of 9.8. Active exploits exist with no official patch available - immediate mitigation is required.
Lower probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
LinuxServer.io heimdall 2.6.3-ls307 contains a vulnerability in how it handles user-supplied HTTP headers, specifically X-Forwarded-Host and Referer. An unauthenticated remote attacker can manipulate these headers to perform Host Header Injection and Open Redirect attacks. This allows the loading of external resources from attacker-controlled domains and unintended redirection of users, potentially enabling phishing, UI redress, and session theft. The vulnerability exists due to insufficient validation and trust of untrusted input, affecting the integrity and trustworthiness of the application.
| Vendor | Product |
|---|---|
| Linuxserver | Docker Heimdall |
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