Vulnerability · Published Sep 25, 2026 · Assigned by mitre
CVE-2026-51773
High 8.1
In plain English
A high-severity server-side request forgery in the python-glance-store package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
An issue in the VMware datastore driver of OpenStack glance_store. When an authenticated attacker provides a maliciously crafted image location URI pointing to an external server, the _retry_request function fails to validate the destination host before attaching sensitive authentication headers.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-glance-store | no fix listed | DEBIAN-CVE-2026-51773 |
| Debian:13 | python-glance-store | no fix listed | DEBIAN-CVE-2026-51773 |
| Debian:14 | python-glance-store | 5.7.0-3 | DEBIAN-CVE-2026-51773 |
| Ubuntu:22.04:LTS | glance | no fix listed | UBUNTU-CVE-2026-51773 |
| Ubuntu:24.04:LTS | glance | no fix listed | UBUNTU-CVE-2026-51773 |
| Ubuntu:26.04:LTS | glance | no fix listed | UBUNTU-CVE-2026-51773 |
| Ubuntu:26.10 | glance | no fix listed | UBUNTU-CVE-2026-51773 |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N