Improper Input Validation Affecting jetty9 package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.2% (10th percentile)

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  • Snyk IDSNYK-ECHOLATEST-JETTY9-18011507
  • published18 Jul 2026
  • disclosed14 Jul 2026

Introduced: 14 Jul 2026

NewCVE-2026-6790  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest jetty9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jetty9 package and not the jetty9 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present).

This was not enforced in earlier HTTP RFC (for example, in RFC 2616), but it is in the latest RFC (9110 and 9112).

This mismatch can cause a number of problems that may be classified as vulnerabilities such as:

  • URI constructions (for example, for redirects -- this is typical for login pages)

  • Virtual host selection

  • Reverse proxying

  • Misleading logs

  • Etc.

Given that the latest RFCs require that request authority and Host header must match, Jetty should enforce this invariant.