Description
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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
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References
History
Mon, 21 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| First Time appeared |
Openstack
Openstack octavia |
|
| Weaknesses | CWE-94 | |
| CPEs | cpe:2.3:a:openstack:octavia:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openstack
Openstack octavia |
|
| References |
|
|
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-21T20:09:16.848Z
Reserved: 2026-09-21T20:09:16.460Z
Link: CVE-2026-94571
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OpenCVE Enrichment
No data.
Weaknesses