CVE-2026-77711
When Jetty's make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required).
Published Oct 15, 2026 · updated Oct 15, 2026 · Eclipse Foundation Eclipse Jetty
When Jetty's make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the header, which arrives to the server, that now has access to the proxy credentials.
Timeline
Detection, updates, and resolution for this record.
Oct 15, 2026 · NIST NVD
Detected
When Jetty's make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the header, which arrives to the server, that now has access to the proxy credentials.
Affected
- vendor Eclipse Foundation Eclipse Jettyversion unspecified
Sources
- CVE.orgCVE-2026-77711
When Jetty's make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the header, which arrives to the server, that now h
cve.org - NIST NVDCVE-2026-77711
When Jetty's make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required). The client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the header,
nvd.nist.gov