{"id":"CVE-2025-3110","title":"OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy","summary":"OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-444"],"vendor":"openvpn","product":"openvpn_access_server","affected":["openvpn_access_server >= 2.7.2, <= 3.1.0"],"published":"2026-07-08","updated":"2026-09-29","sourceUpdated":"2026-09-29T19:10:00.160","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-3110","references":[{"url":"https://openvpn.net/as-docs/as-3-2-release-notes.html","label":"security@openvpn.net"}],"tags":["nvd"],"epss":0.00445,"epssPercentile":0.36266,"ingestedAt":"2026-09-29T19:44:04.103Z","slug":"CVE-2025-3110","body":"## Overview\n\nOpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy\n\n## Affected\n\n- `openvpn_access_server >= 2.7.2, <= 3.1.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}