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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54757 advisory.

    Red Hat OpenStack Platform provides the facilities for building, deploying and monitoring a private or     public infrastructure-as-a-service (IaaS) cloud running on commonly available physical hardware.

    Security Fix(es):

    * crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate     (CVE-2025-61729)

    * openstack-nova-compute: Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in     OpenStack Nova (CVE-2026-24708)

    * pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID (CVE-2026-23490)

    * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)

    * crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption (CVE-2025-68121)

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

    * crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137)

    * net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

    * google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to     improper HTTP/2 path validation (CVE-2026-33186)

    * etcd: etcd: Authorization bypass allows information disclosure and denial of service (CVE-2026-33413)

    * crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation     (CVE-2026-32281)

    * crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint     application (CVE-2026-33810)

    * golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

    * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages     (CVE-2026-32283)

    * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building     (CVE-2026-32280)

    * net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)

    * golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect     Punycode label processing (CVE-2026-39821)

    * erlang: Erlang OTP public_key: Certificate chain forgery via improper trust chain validation     (CVE-2026-42789)

    * crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries     (CVE-2026-27145)

    * oslo.messaging: openstack: OpenStack oslo.messaging: Man-in-the-middle attack via improper TLS hostname     verification (CVE-2026-44393)

    * erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing (CVE-2026-42790)

    * openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature     validation flaw (CVE-2025-65073)

    * OpenStack Keystone: OpenStack Keystone: Unauthorized cross-project access due to improper validation in     EC2 credential creation (CVE-2026-43001)

    * openstack-keystone: OpenStack Keystone: Privilege escalation through EC2 credential creation     (CVE-2026-33551)

    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 these issues but has instead relied only on the application's self-reported version number.

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	Type	Severity
335312	RHEL 8 : Red Hat OpenStack Platform 16.2 security advisory (Important) (RHSA-2026:54757)	Nessus	Red Hat Local Security Checks	Local	high
327053	RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0 (openstack-glance) (RHSA-2026:39812)	Nessus	Red Hat Local Security Checks	Local	high
309914	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : OpenStack Glance vulnerabilities (USN-8199-1)	Nessus	Ubuntu Local Security Checks	Local	high
439682	SCA: security update for glance (GHSA-mc26-q38v-83gv)	Tenable Cloud Security	SCA Checks	Local	high
439682	SCA: security update for glance (GHSA-mc26-q38v-83gv)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
304411	Linux Distros Unpatched Vulnerability : CVE-2026-34881	Nessus	Misc.	Local	high

Detections

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CVE-2026-34881

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Tenable Plugins

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