{"id":"CVE-2026-118372","revision":"5a1d5972044544faa0c428632f11245c","records":[{"revision":"5a1d5972044544faa0c428632f11245c","observedAt":"2026-10-28T03:51:21.076+00:00","statement":{"source":"cve-program","id":"CVE-2026-118372","aliases":[],"title":"LibreSSL ocspcheck through 4.4.0 CRLF Injection via AIA OCSP URL Path","description":"LibreSSL ocspcheck through 4.4.0 contains a CRLF injection vulnerability that allows attackers to inject HTTP headers by embedding CR/LF sequences in a certificate's AIA OCSP URI path. Because url2host() copies the path without rejecting control characters and http_open() places it in the POST request line, attackers can inject headers or split OCSP requests sent to the responder host.","state":0,"publishedAt":"2026-10-28T02:03:20.849+00:00","modifiedAt":"2026-10-28T02:03:20.849+00:00","affected":[{"ecosystem":"Vendor product","name":"LibreSSL","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OpenBSD\",\n                    \"product\": \"LibreSSL\",\n                    \"packageURL\": \"pkg:github/libressl/portable\",\n                    \"repo\": \"https://github.com/libressl/portable\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"4.4.0\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","score":3.7,"severity":"LOW"}],"references":["https://github.com/openbsd/src/commit/6efdc4cce3fac9fa7208a9452f84de34c5a68e9f","https://github.com/openbsd/src/commit/3adb7688a5bcfb675fa6d8b10e242022d620a23d","https://github.com/openbsd/src/blob/17a8e44328ee2505d69723a126a390a526e50370/usr.sbin/ocspcheck/http.c#L344","https://github.com/openbsd/src/blob/17a8e44328ee2505d69723a126a390a526e50370/usr.sbin/ocspcheck/ocspcheck.c#L154","https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-4.4.0-relnotes.txt","https://github.com/libressl/portable","https://www.vulncheck.com/advisories/libressl-ocspcheck-through-4.4.0-crlf-injection-via-aia-ocsp-url-path"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118372","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-118372","identifiers":["CVE-2026-118372"]},"retained":false,"historicalAffected":[]}],"coverage":[]}