{"id":"AZL-72292","summary":"CVE-2025-14523 affecting package libsoup for versions less than 3.4.4-12","details":"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.","modified":"2026-10-02T05:34:59Z","published":"2025-12-11T13:15:58Z","upstream":["CVE-2025-14523"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14523"}],"affected":[{"package":{"name":"libsoup","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/libsoup"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.4-12"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-72292.json"}}],"schema_version":"1.9.0"}