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NVD description
A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
🚨 HIGH: CVE-2025-14523 (CVSS 8.2) - libsoup HTTP header flaw allows Host header confusion attacks. Multiple Host headers enable request smuggling, cache poisoning & access control bypass. Patch immediately. #CVE #Vulnerability #PatchNow https://t.co/tzkWYfPDot