High severityNVD Advisory· Published Oct 15, 2026
CVE-2026-77711
CVE-2026-77711
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).
The 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.
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Affected products
1Patches
Vulnerability mechanics
References
2News mentions
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