{"id":"CVE-2026-77711","details":"When Jetty's `HttpClient` make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required).\n\n\n\nThe client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the `Proxy-Authentication` header, which arrives to the server, that now has access to the proxy credentials.","aliases":["GHSA-r2c5-3p8g-wpvw"],"modified":"2026-10-16T02:48:06.682628098Z","published":"2026-10-15T08:51:48.066Z","database_specific":{"cna_assigner":"eclipse","cwe_ids":["CWE-200"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77711.json","unresolved_ranges":[{"extracted_events":[{"introduced":"11.0.0"},{"last_affected":"11.0.32"},{"introduced":"10.0.0"},{"last_affected":"10.0.32"},{"introduced":"9.4.0"},{"last_affected":"9.4.64"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77711.json"},{"type":"ADVISORY","url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw"},{"type":"WEB","url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/238"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77711"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jetty/jetty.project","events":[{"introduced":"c8372b65bd15404de1444d68902c0455a3a69b64"},{"last_affected":"99a51624fd3b9f5f387fce44b628abf0b491f432"},{"introduced":"28100e8da711e44c0722ed10bd413ae862497539"},{"last_affected":"bdf87d35991b6459dec358c6012412e329f110b3"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"12.1.0"},{"last_affected":"12.1.12"},{"introduced":"12.0.0"},{"last_affected":"12.0.38"}]}}],"versions":["jetty-12.0.38","jetty-12.1.12","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-2026-77711.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}