CVE-2026-77711
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.
CVE-2026-77711
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-77711
Eclipse Jetty
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Eclipse Foundation",
"product": "Eclipse Jetty",
"versions": [
{
"status": "affected",
"version": "12.1.0",
"versionType": "semver",
"lessThanOrEqual": "12.1.12"
},
{
"status": "affected",
"version": "12.0.0",
"versionType": "semver",
"lessThanOrEqual": "12.0.38"
},
{
"status": "affected",
"version": "11.0.0",
"versionType": "semver",
"lessThanOrEqual": "11.0.32"
},
{
"status": "affected",
"version": "10.0.0",
"versionType": "semver",
"lessThanOrEqual": "10.0.32"
},
{
"status": "affected",
"version": "9.4.0",
"versionType": "semver",
"lessThanOrEqual": "9.4.64"
}
],
"packageName": "org.eclipse.jetty:jetty-client",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-77711
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #28765 · Revision 1
- Added to Heist Feed
- Publisher date