CVE-2026-51772

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Server-Side Request Forgery in OpenStack Glance Image API

Publication date: 2026-09-25

Last updated on: 2026-09-29

Assigner: MITRE

Description

A Server-Side Request Forgery (SSRF) vulnerability exists in the Image API (v2) of OpenStack Glance. When the show_multiple_locations configuration option is enabled in glance-api.conf, an authenticated attacker can manipulate the locations attribute of an image in the queued state by sending a crafted HTTP PATCH request

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-25

Last Modified

2026-09-29

Generated

2026-10-16

AI Q&A

2026-09-25

EPSS Evaluated

2026-10-14

NVD

CVE-2026-51772

EUVD

EUVD-2026-87085

Affected Vendors & Products

Vendor	Product	Version / Range
openstack	glance	2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This is a Server-Side Request Forgery (SSRF) vulnerability in OpenStack Glance's Image API (v2). When the show_multiple_locations option is enabled, an authenticated attacker can send a crafted HTTP PATCH request to manipulate the locations attribute of an image in the queued state.

Detection Guidance

To detect this SSRF vulnerability in OpenStack Glance, check if the show_multiple_locations configuration option is enabled in glance-api.conf. If enabled, verify if authenticated users can manipulate image locations via crafted HTTP PATCH requests. Monitor logs for unusual PATCH requests targeting the Image API (v2).

Impact Analysis

An attacker could exploit this to make the server send unauthorized requests to internal systems, potentially accessing sensitive data or services. This could lead to data breaches, unauthorized actions, or further network compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Disable the show_multiple_locations configuration option in glance-api.conf and restart the Glance API service to prevent the SSRF vulnerability from being exploited.

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