SSRF in OpenStack Glance
CVE-2026-34881
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (19.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Openstack Glance — versions 0, 30.0.0, 31.0.0
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
- cve@mitre.org (Patch, Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-34881?
- CVE-2026-34881 is a medium-severity vulnerability in OpenStack Glance, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-03-31.
- How severe is CVE-2026-34881?
- Medium severity. CVSS v3 base score is 5.0 out of 10.