{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-124440 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-124440 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-124440 is a critical vulnerability in kyverno, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-124440 and fix it if it is affected.\n\nWhat it is: CVE-2026-124440 is a critical vulnerability in kyverno, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-124440 in the wild and no public exploit code.\n\nAffected product: kyverno. 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-2026-124440/ (Markdown: https://insights.sbomify.com/CVE-2026-124440/index.md)","id":"CVE-2026-124440","markdown":"https://insights.sbomify.com/CVE-2026-124440/index.md","name":"CVE-2026-124440","record":{"aliases":["GHSA-39w8-hv5g-f73w","GHSA-xvrq-w385-5mfv"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-441","name":"Unintended Proxy or Intermediary"}],"description":"Kyverno from 1.19.1 before 1.19.2 contains an authorization bypass vulnerability in the apiCall namespace clamp that allows namespace tenants to issue cross-namespace and cluster-scoped API requests by appending malformed percent-escapes to urlPath. Attackers can create namespaced Policies whose apiCall runs as the admission-controller ServiceAccount to read other namespaces' resources and create mutating webhooks, escalating to cluster admin.","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":"Kyverno 1.19.1 Privilege Escalation via apiCall Namespace Clamp Bypass","id":"CVE-2026-124440","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Kyverno before 1.19.2 Authorization Bypass via Variable Generate Target Kind","id":"CVE-2026-124441"},"nickname":null,"packages":[],"prev":{"headline":"Scriban before 7.5.3 Denial of Service via Uncatchable StackOverflowException","id":"CVE-2026-124439"},"products":["kyverno"],"published":"2026-11-08","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":"total"},"state":"PUBLISHED","updated":"2026-11-09","vendors":["kyverno"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-124440/"}