CVE-2026-94572

In OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters. The value is written verbatim into the HAProxy configuration generated on the amphora, and thus an authenticated project member who owns a TLS-enabled load balancer can embed a newline and inject arbitrary HAProxy configuration directives. Only deployments using the Amphora provider are affected.

• https://bugs.debian.org/1148175
• https://bugs.launchpad.net/octavia/+bug/2162101
• https://bugs.launchpad.net/octavia/+bug/2167565
• https://opendev.org/openstack/octavia/commit/cad62902e4984a46ad80cbfa943e90006d8d599d
• https://openwall.com/lists/oss-security/2026/09/21/6
• https://security.openstack.org/ossa/OSSA-2026-039.html
• https://bugs.launchpad.net/octavia/+bug/2162101