What’s Vulnerable › Vulnerabilities

CVE-2026-34881

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-31 · updated 2026-08-14
• Weakness: CWE-918

Description

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; from 30.0.0 before 30.1.1; 31.0.0 — fixed in 29.1.1, 30.1.1

How to fix

Upgrade to a fixed version: OpenStack Glance 29.1.1, 30.1.1. Check the vendor advisory for mitigations.

References

• https://bugs.launchpad.net/glance/+bug/2138602
• https://security.openstack.org/ossa/OSSA-2026-004.html
• https://access.redhat.com/errata/RHSA-2026:39812
• https://access.redhat.com/errata/RHSA-2026:54757
• https://access.redhat.com/security/cve/CVE-2026-34881
• https://bugs.launchpad.net/glance/+bug/2138602
• https://bugzilla.redhat.com/show_bug.cgi?id=2440368
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34881.json

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