This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-63718 →
UBUNTU-CVE-2026-63718
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_...
Original description
The description as published by the source.
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.68.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:Pro:20.04:LTS
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.41-4ubuntu3.23+esm9"}]}]
Ubuntu:22.04:LTS
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.52-1ubuntu4.25"}]}]
Ubuntu:24.04:LTS
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.58-1ubuntu8.17"}]}]
Ubuntu:26.10
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
apache2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.66-2ubuntu2.6"}]}]
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report httpd.apache.org
- report httpd.apache.org
- report openwall.com