{"id":"CVE-2026-77711","published":"2026-10-15T09:17:18.573","lastModified":"2026-10-15T14:41:34.110","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-200"],"vendors":[],"products":[],"references":[{"url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw","tags":[]},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/238","tags":[]},{"url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw","tags":[]}],"exploitRefs":[{"url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw","tags":[]},{"url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw","tags":[]}],"hasPoc":true,"ai":null}