CVE-2026-38969

critical

Description

ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling.

References

https://github.com/ruby/webrick/pull/199

https://github.com/ruby/webrick/issues/198

Details

Source: Mitre, NVD

Published: 2026-07-02

Updated: 2026-07-02

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical