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TI-2025-32167 Aliases CVE-2025-50578GHSA-2c6m-gpf4-cfgp

LinuxServer.io heimdall 2.6.3-ls307 contains a vulnerability in how it handles…

Priority HIGH 82CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-601.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.031 87th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:linuxserver:docker-heimdall:2.6.3-ls307:*:*:*:*:*:*:*2.6.3-ls307VulnerableLinuxServer
  • cpe:2.3:a:linuxserver:docker-heimdall:2.6.3-ls307:*:*:*:*:*:*:* Versions 2.6.3-ls307 Vulnerable ·LinuxServer

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-50578
  2. 2026-10-03 Alias added: GHSA-2c6m-gpf4-cfgp

References

Exploit 2

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences