CVE-2026-34881

Summary

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 Software

Weaknesses

• CWE-918: CWE-918 Server-Side Request Forgery (SSRF)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://bugs.launchpad.net/glance/+bug/2138602

openstack-glance: OpenStack Glance: Server-Side Request Forgery leading to unauthorized internal network access

Additional References

• https://access.redhat.com/security/cve/CVE-2026-34881
• https://bugzilla.redhat.com/show_bug.cgi?id=2440368
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34881.json

References

• https://bugs.launchpad.net/glance/+bug/2138602
• https://security.openstack.org/ossa/OSSA-2026-004.html

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