{"id":"CVE-2023-40518","details":"LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.","modified":"2026-04-10T05:00:52.323195Z","published":"2023-08-14T22:15:14.327Z","references":[{"type":"ADVISORY","url":"https://www.litespeedtech.com/products/litespeed-web-server/release-log"},{"type":"ADVISORY","url":"https://openlitespeed.org/release-log/version-1-7-x/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/litespeedtech/openlitespeed","events":[{"introduced":"0"},{"fixed":"f52f8d6a21df4337de99fd3be814c8e512c8cf64"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.7.18"}]}}],"versions":["v.1.7.11","v.1.7.11.1","v1.0.4","v1.3","v1.3.2","v1.4.0","v1.4.1","v1.4.2","v1.5.0","v1.5.0rc6","v1.5.2","v1.6.3","v1.7.0","v1.7.1","v1.7.10","v1.7.10.1","v1.7.10.2","v1.7.12","v1.7.12.1","v1.7.13","v1.7.13.1","v1.7.13.2","v1.7.14","v1.7.15","v1.7.15.2","v1.7.16","v1.7.16.1","v1.7.2","v1.7.3","v1.7.4","v1.7.5","v1.7.6","v1.7.7","v1.7.8","v1.7.9","v1.7.9.1","v1.7.9.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40518.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}