{"id":"CVE-2026-18660","summary":"Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames","details":"In Eclipse Jetty, across various versions of `jetty-server`, and `jetty-proxy`, the host whitelist/blacklist is case-sensitive, and would allow hosts through that only differ by case.","aliases":["GHSA-7wfj-j486-mxrf"],"modified":"2026-10-16T02:47:56.327187757Z","published":"2026-10-15T09:38:02.125Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18660.json","unresolved_ranges":[{"extracted_events":[{"introduced":"11.0.0"},{"last_affected":"11.0.32"},{"introduced":"10.0.0"},{"last_affected":"10.0.32"},{"introduced":"9.0.0"},{"last_affected":"9.4.64"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"eclipse","cwe_ids":["CWE-178","CWE-918"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18660.json"},{"type":"ADVISORY","url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-7wfj-j486-mxrf"},{"type":"WEB","url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/212"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18660"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jetty/jetty.project","events":[{"introduced":"c8372b65bd15404de1444d68902c0455a3a69b64"},{"last_affected":"6c1ced3f077bc633716c54758a743b09b21328e8"},{"introduced":"28100e8da711e44c0722ed10bd413ae862497539"},{"last_affected":"bdf87d35991b6459dec358c6012412e329f110b3"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"12.1.0"},{"last_affected":"12.1.11"},{"introduced":"12.0.0"},{"last_affected":"12.0.38"}]}}],"versions":["jetty-12.0.38","jetty-12.1.11","jetty-12.0.37","jetty-12.1.5","jetty-12.0.31","jetty-12.1.4","jetty-12.0.30","jetty-12.1.2","jetty-12.0.23","jetty-12.1.0.beta1","jetty-12.0.22","jetty-12.0.19","jetty-12.0.15","jetty-12.0.14","jetty-12.0.6","jetty-12.0.5","jetty-12.0.0x"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18660.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}]}