Information Exposure Affecting jetty12 package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.32% (24th percentile)

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  • Snyk IDSNYK-ECHOLATEST-JETTY12-21004890
  • published16 Oct 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-77711  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest jetty12.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jetty12 package and not the jetty12 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1