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.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Mon, 19 Oct 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Eclipse
Eclipse jetty |
|
| Vendors & Products |
Eclipse
Eclipse jetty |
Fri, 16 Oct 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | org.eclipse.jetty/jetty-client: jetty-client: Information disclosure via improper proxy authentication handling | |
| Weaknesses | CWE-201 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Thu, 15 Oct 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 15 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Weaknesses | CWE-200 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: eclipse
Published:
Updated: 2026-10-15T13:50:52.566Z
Reserved: 2026-08-21T08:58:54.421Z
Link: CVE-2026-77711
Updated: 2026-10-15T13:50:46.699Z
Status : Awaiting Analysis
Published: 2026-10-15T09:17:18.573
Modified: 2026-10-15T14:41:34.110
Link: CVE-2026-77711
OpenCVE Enrichment
Updated: 2026-10-19T14:01:44Z