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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:39812 advisory.

    OpenStack Image Service (code-named Glance) provides     discovery, registration, and delivery services for virtual disk images. The     Image Service API server provides a standard REST interface for querying     information about virtual disk images stored in a variety of back-end     stores, including OpenStack Object Storage. Clients can register new     virtual disk images with the Image Service, query for information on     publicly available disk images, and use the Image Service's client library     for streaming virtual disk images.

    Security Fix(es):

    * openstack-glance: OpenStack Glance  Unvalidated URI Fetch in OVF     Processing (SSRF) ()

    * openstack-glance: OpenStack Glance  Redirect Validation Bypass in     glance-download Import (SSRF) ()

    * OpenStack Glance: Server-Side Request Forgery leading to unauthorized     internal network access (CVE-2026-34881)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE     page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8199-1 advisory.

    Martin Kaesberger discovered that OpenStack Glance's image processing could return the contents of     arbitrary files. An attacker could possibly use this issue to exfiltrate sensitive data. This issue only     affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-32498)

    Hyeongeun Ji and Abhishek Kekane discovered several server-side request forgery vulnerabilities in     OpenStack Glance's image import. An attacker could possibly use this issue to bypass URL validation checks     and redirect to internal services. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
    (CVE-2026-34881)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-34881)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-34881)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
327053	RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0 (openstack-glance) (RHSA-2026:39812)	Nessus	Red Hat Local Security Checks	high
309914	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : OpenStack Glance vulnerabilities (USN-8199-1)	Nessus	Ubuntu Local Security Checks	high
439682	SCA: security update for glance (GHSA-mc26-q38v-83gv)	Tenable Cloud Security	SCA Checks	high
439682	SCA: security update for glance (GHSA-mc26-q38v-83gv)	Tenable Self-Hosted Container Security	SCA Checks	high
304411	Linux Distros Unpatched Vulnerability : CVE-2026-34881	Nessus	Misc.	high

Detections

Analytics

CVE-2026-34881

high

Tenable Plugins

high

high

high

high

high