CVE-2026-94571

Affected: OpenStack Octavia

In OpenStack Octavia before 18.0.1, the Amphora provider driver did not reject control characters in the L7 policy redirect_url and redirect_prefix fields. The RFC 3986 URL validator percent-encodes control characters before validating, and thus newlines passed structural checks, but Octavia stored and wrote the raw unencoded value directly into the HAProxy configuration generated on the amphora. An authenticated project member who owns a load balancer can therefore inject arbitrary HAProxy directives through a REDIRECT_TO_URL L7 policy. Only deployments using the Amphora provider are affected.

USN-8814-1 — octavia vulnerabilities

Affected: Ubuntu:22.04:LTS: octavia, Ubuntu:24.04:LTS: octavia, Ubuntu:26.04:LTS: octavia

It was discovered that Octavia did not properly validate TLS cipher string fields in the Amphora provider driver. An authenticated attacker who owns a TLS-enabled load balancer could possibly use this issue to inject arbitrary HAProxy configuration directives. (CVE-2026-94572)

It was discovered that Octavia did not properly validate L7 policy redirect URL fields in the Amphora provider driver. An authenticated attacker who owns a load balancer could possibly use this issue to inject arbitrary HAProxy configuration directives. (CVE-2026-94571)

It was discovered that Octavia incorrectly handled quality of service policy authorization. An authenticated attacker could possibly use this issue to prevent deletion of another project's QoS policy. (CVE-2026-74248)

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CVE-2026-94571

USN-8814-1 — octavia vulnerabilities