{"id":"CVE-2023-40518","details":"LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.","modified":"2026-08-12T03:51:17.365165295Z","published":"2023-08-14T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40518.json","unresolved_ranges":[{"extracted_events":[{"fixed":"1.7.18"}],"source":"DESCRIPTION"}]},"references":[{"type":"WEB","url":"https://openlitespeed.org/release-log/version-1-7-x/"},{"type":"WEB","url":"https://www.litespeedtech.com/products/litespeed-web-server/release-log"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40518.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40518"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/litespeedtech/openlitespeed","events":[{"introduced":"0"},{"fixed":"f52f8d6a21df4337de99fd3be814c8e512c8cf64"}],"database_specific":{"cpe":"cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.7.18"}],"source":"CPE_RANGE"}}],"versions":["v1.7.16.1","v1.7.16","v1.7.15.2","v1.7.15","v1.7.14","v1.7.13.2","v1.7.13.1","v1.7.13","v1.7.12.1","v1.7.12","v.1.7.11.1","v.1.7.11","v1.7.10.2","v1.7.10.1","v1.7.10","v1.7.9.2","v1.7.9.1","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.3","v1.5.2","v1.5.0","v1.5.0rc6","v1.4.2","v1.4.1","v1.4.0","v1.3.2","v1.3","v1.0.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-40518.json"}}],"schema_version":"1.9.0"}