{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-13434 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-13434 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13434 is a medium-severity missing authorization vulnerability in Red Hat OpenShift Virtualization 4, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13434 and fix it if it is affected.\n\nWhat it is: CVE-2026-13434 is a medium-severity missing authorization vulnerability in Red Hat OpenShift Virtualization 4, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-13434 in the wild and no public exploit code.\n\nAffected product: Red Hat OpenShift Virtualization 4. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-13434/ (Markdown: https://insights.sbomify.com/CVE-2026-13434/index.md)","id":"CVE-2026-13434","markdown":"https://insights.sbomify.com/CVE-2026-13434/index.md","name":"CVE-2026-13434","record":{"aliases":["GHSA-9fjc-whw6-cqfc","MINI-fpm5-fhwg-8854","MINI-xffh-2665-387g"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"patch","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"KubeVirt virtualization","requires_auth":"low_privilege","summary":"Tenants can inject network annotations to access other namespaces and impersonate IPs when a specific feature gate is enabled.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"kubevirt","vendor":"kubevirt"},{"product":"openshift_virtualization","vendor":"redhat"}],"cvss":{"score":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A flaw was found in KubeVirt's network annotation generator. When a tenant creates a VirtualMachineInstance with a Multus network configuration, the supplied networkName value is written verbatim into the launcher pod's v1.multus-cni.io/default-network annotation without format validation or sanitization. The only admission check rejects empty strings; no DNS-1123 format validation, JSON detection, or special character rejection is performed. When the ExternalNetResourceInjection Beta feature gate is enabled (off by default, cluster-admin only), the NAD lookup that would otherwise catch malformed names is skipped by design. A tenant with kubevirt.io:edit permissions can inject a JSON-formatted NetworkSelectionElement array specifying an arbitrary namespace, NAD name, static IP address, and MAC address. Multus on the node parses this JSON and attaches the launcher pod to the specified network attachment in any namespace, enabling cross-namespace network access and IP/MAC impersonation on network segments normally segregated from tenant workloads. The ExternalNetResourceInjection feature gate was introduced in KubeVirt v1.8.0 (first shipped in OpenShift Virtualization 4.21).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Missing authorization in Red Hat OpenShift Virtualization 4","id":"CVE-2026-13434","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Python Interpreter Sandbox Bypass Leading to Sensitive Data Exposure","id":"CVE-2026-13435"},"packages":[],"prev":{"headline":"IBM i Access Client Solutions (ACS) is Affected By Multiple Vulnerabilities","id":"CVE-2026-13433"},"products":["Red Hat OpenShift Virtualization 4"],"published":"2026-06-26","related":[{"cvss_score":9.9,"headline":"Privilege Escalation in kubevirt","id":"CVE-2020-14316","kev_date_added":null,"published":"2020-07-29"},{"cvss_score":8.7,"headline":"Path Traversal vulnerability in Kubevirt","id":"CVE-2022-1798","kev_date_added":null,"published":"2022-09-15"},{"cvss_score":8.5,"headline":"KubeVirt Vulnerable to Arbitrary Host File Read and Write","id":"CVE-2025-64324","kev_date_added":null,"published":"2025-11-18"},{"cvss_score":8.2,"headline":"On a compromised KubeVirt node, the virt-handler service account can be used to modify all node specs","id":"CVE-2023-26484","kev_date_added":null,"published":"2023-03-15"},{"cvss_score":7.3,"headline":"Path traversal in Red Hat Container Native Virtualization 4.12","id":"CVE-2026-13201","kev_date_added":null,"published":"2026-06-24"},{"cvss_score":6.9,"headline":"KubeVirt Excessive Role Permissions Could Enable Unauthorized VMI Migrations Between Nodes","id":"CVE-2025-64436","kev_date_added":null,"published":"2025-11-07"},{"cvss_score":6.5,"headline":"Auth bypass in Red Hat OpenShift Virtualization 4","id":"CVE-2026-13208","kev_date_added":null,"published":"2026-06-24"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-27","vendors":["Red Hat"]},"summary":"Tenants can inject network annotations to access other namespaces and impersonate IPs when a specific feature gate is enabled.","url":"https://insights.sbomify.com/CVE-2026-13434/"}