CVE-2026-94571
CriticalCVSS 9.4Summary
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, so newlines passed structural checks, but Octavia stored and wrote the raw unencoded value directly into the HAProxy configuration generated on the amphora.
Risk Assessment
An authenticated project member who owns a load balancer can inject arbitrary HAProxy directives through a REDIRECT_TO_URL L7 policy, potentially leading to traffic interception or security bypass. Only deployments using the Amphora provider are affected.
Recommendation
Upgrade OpenStack Octavia to version 18.0.1 or later. Until patched, restrict the ability to create L7 redirect policies and audit HAProxy configurations for unexpected entries.
Other vulnerabilities in OpenStack Octavia
See all- CVE-2026-94572Critical
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, allowing an authenticated project member who owns a TLS-enabled load balancer to embed a newline and inject arbitrary HAProxy configuration directives.
- CVE-2026-74248Medium
OpenStack Octavia through 18.0.0 mishandles QoS policy authorization. By associating another project's QoS policy with an amphora, an authenticated user may prevent deletion of that policy.
Original NVD description (English source)
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.