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MEDIUM

CVE-2026-6790

CVSS v3

5.3

MEDIUM

EPSS Score

0.3 %

exploit probability, as of 2026-10-02

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

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 p

Technical details

Published
2026-07-14
Last Modified
2026-07-14
GitHub Advisory
GHSA-7p3p-8qv8-m2vh

Frequently asked questions

What is CVE-2026-6790?

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 p

Is CVE-2026-6790 actively exploited?

Active exploitation of CVE-2026-6790 has not been confirmed. Its EPSS score was 0.3% on 2026-10-02, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-6790?

CVE-2026-6790 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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