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Fencer Vulns
high 8.1

CVE-2026-51773 json

An issue in the VMware datastore driver of OpenStack glance_store.

published 2026-09-25 45 d ago modified 2026-09-30 39 d ago also EUVD-2026-87084

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

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.

Patch / fix

  • python-glance-store Debian 14 5.7.0-3

debian advisories DEBIAN-CVE-2026-51773

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-51773 updated cvss 6.5

glance-store: glance_store: glance_store: Information disclosure via unvalidated external image location URI

  • Red Hat OpenStack Platform 13 (Queens) python-glance-store, python2-glance-store Red Hat OpenStack Platform 16.2 python-glance-store, python3-glance-store, rhosp-rhel8/openstack-glance-api Red Hat OpenStack Platform 17.1 python-glance-store, python3-glance-store, rhosp-rhel9/openstack-glance-api
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 18.0 python-glance-store, rhoso/openstack-glance-api-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
44 d ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/sadandbset/CVE-2026-51772-CVE-2026-51773/blob/main/CVE-2026-51773.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Classification

Weakness
  • CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.