CVE-2026-34881: Openstack Glance

Medium severity, CVSS 5.0. EPSS: 0.4% chance of exploitation in the next 30 days.

OpenStack Glance before 29.1.1, 30.x before 30.1.1, and 31.0.0 is affected by Server-Side Request Forgery (SSRF). By use of HTTP redirects, an authenticated user can bypass URL validation checks and redirect to internal services. Only glance image import functionality is affected. In particular, the web-download and glance-download import methods are subject to this vulnerability, as is the optional (not enabled by default) ovf_process image import plugin.

Affected products

• Openstack Glance: before 29.1.1 (fixed in 29.1.1); from 30.0.0, before 30.1.1 (fixed in 30.1.1); version 31.0.0 only

Published 2026-03-31. Last modified 2026-08-14.