Red Hat Security Advisory: Technical preview of the satellite/iop-vmaas-rhel9 container image
🔗 CVE IDs covered (3)
📋 Description
CVE-2026-44431 — urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers CVE-2026-44432 — urllib3: urllib3: Denial of Service due to excessive HTTP response decompression CVE-2026-48710 — starlette: Starlette: Security restriction bypass via malformed HTTP Host header
🎯 Affected products2
- Red Hat Satellite 6.19
- registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:0239eafa03209b4a08d699af3cd7d42e14af4b9143bb985f415aa277a3e50a10_amd64 as a component of Red Hat Satellite 6.19
✅ Remediation
For Red Hat Lightspeed in Satellite installation see the Red Hat Satellite documentation. Workaround: Deploying an RFC-compliant reverse proxy (such as nginx, Apache, HAProxy, or Caddy) in front of the ASGI server will reject malformed Host headers before they reach the application. This is the most straightforward mitigation that does not require code changes. If custom middleware is present, it should be updated to use `request.scope["path"]` instead of `request.url.path` for any security decisions. The ASGI scope path is derived from the HTTP request line and is not influenced by the Host header, so it reflects the actual request target.
🔗 References (10)
- selfhttps://access.redhat.com/errata/RHSA-2026:34526
- externalhttps://access.redhat.com/documentation/en-us/red_hat_satellite/6.18/html/updating_red_hat_satellite/index
- externalhttps://access.redhat.com/security/cve/CVE-2026-44431
- externalhttps://access.redhat.com/security/cve/CVE-2026-44432
- externalhttps://access.redhat.com/security/cve/CVE-2026-48710
- externalhttps://access.redhat.com/security/updates/classification/
- externalhttps://catalog.redhat.com/software/containers/search
- externalhttps://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_connected_network_environment/performing-additional-configuration-on-server_satellite#installing-and-configuring-red-hat-lightspeed-in-satellite
- externalhttps://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_disconnected_network_environment/performing-additional-configuration#installing-and-configuring-red-hat-lightspeed-in-satellite
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_34526.json