CVEvulnerability

CVE-2025-50578

9.8 CRITICAL Published 2025-07-30 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-07-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-20, CWE-601, CWE-74

Description

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.

Affected configurations

• linuxserver docker-heimdall 2.6.3-ls307

Related

Weakness · CWE (3)

  • CWE-20 Improper Input Validation weakness
  • CWE-601 URL Redirection to Untrusted Site weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness

References