{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66878 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66878 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66878 is a high-severity vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 12 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-66878 and fix it if it is affected.\n\nWhat it is: CVE-2026-66878 is a high-severity vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.11, published on 12 Aug 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-2026-66878 in the wild and no public exploit code.\n\nAffected product: Red Hat Advanced Cluster Management for Kubernetes 2.11. 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-2026-66878/ (Markdown: https://insights.sbomify.com/CVE-2026-66878/index.md)","id":"CVE-2026-66878","markdown":"https://insights.sbomify.com/CVE-2026-66878/index.md","name":"CVE-2026-66878","record":{"aliases":["GHSA-37c6-v768-8x6w"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes operator","requires_auth":"low_privilege","summary":"Namespace administrators can exfiltrate secrets from other namespaces by manipulating channel references, leading to information disclosure in Red Hat Advanced Cluster Management.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Information disclosure in Red Hat Advanced Cluster Management for Kubernetes 2.11","id":"CVE-2026-66878","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"Path traversal in imported file_entries name allows arbitrary file write via URL-type entry download","id":"CVE-2026-66881"},"packages":[],"prev":{"headline":"Gitea fork workflow approval bypass through concurrency cancellation","id":"CVE-2026-66877"},"products":["Red Hat Advanced Cluster Management for Kubernetes 2.11","Red Hat Advanced Cluster Management for Kubernetes 2.13","Red Hat Advanced Cluster Management for Kubernetes 2.14","Red Hat Advanced Cluster Management for Kubernetes 2.15","Red Hat Advanced Cluster Management for Kubernetes 2.16","Red Hat Advanced Cluster Management for Kubernetes 2.17"],"published":"2026-08-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-05","vendors":["Red Hat"]},"summary":"Namespace administrators can exfiltrate secrets from other namespaces by manipulating channel references, leading to information disclosure in Red Hat Advanced Cluster Management.","url":"https://insights.sbomify.com/CVE-2026-66878/"}