CVE-2026-71198 Server-side request forgery in Glance
Authenticated users can exploit missing host validation in the location API to access internal endpoints like the metadata service via Server-Side Request Forgery.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71198?
CVE-2026-71198 is a high-severity server-side request forgery vulnerability in OpenStack Glance, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In OpenStack Glance before 32.0.1, the location API does not validate destination hosts when adding an HTTP location to an image. Unlike the web-download import path, the location API only checks the URL scheme and does not apply the import_filtering_opts host restrictions. An authenticated user can add a location pointing to internal endpoints such as the cloud metadata service (169.254.169.254), and retrieve the response by downloading the image data. This affects both the new POST /v2/images/{id}/locations API and the old PATCH API when show_multiple_locations is enabled. Deployments with the HTTP store backend enabled are affected.
Weakness: CWE-918
Which versions are affected by CVE-2026-71198?
How do I fix CVE-2026-71198?
Upgrade to a fixed version.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-71198 being exploited?
There is no known exploitation of CVE-2026-71198 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-71198, GHSA-cmxv-7r4v-g73c, UBUNTU-CVE-2026-71198.