{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-122318 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-122318 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-122318 is a high-severity vulnerability in kyverno, published on 5 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-122318 and fix it if it is affected.\n\nWhat it is: CVE-2026-122318 is a high-severity vulnerability in kyverno, published on 5 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-122318 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-2026-122318/ (Markdown: https://insights.sbomify.com/CVE-2026-122318/index.md)","id":"CVE-2026-122318","markdown":"https://insights.sbomify.com/CVE-2026-122318/index.md","name":"CVE-2026-122318","record":{"aliases":["GHSA-fcfr-fr8g-qjqv","GHSA-p8fx-8mgf-mvw3"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[{"name":"Kyverno","product":"kyverno","vendor":"kyverno"}],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L","version":"4.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"Kyverno before 1.19.2 contains an authentication bypass in matchCertificateData that skips verifyImages subject and subjectRegExp checks when the signing certificate has no Subject Alternative Name. Attackers holding a leaf certificate from a configured private trust root can omit the SAN, set the expected Fulcio issuer OID, and sign malicious images that are admitted despite signer pinning.","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 before 1.19.2 Cosign Identity Check Bypass via Empty SAN Certificates","id":"CVE-2026-122318","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 Denial of Service via In/NotIn Operator Panic","id":"CVE-2026-122319"},"nickname":null,"packages":[],"prev":{"headline":"SplitPro through 2.1.6 Authorization Bypass via user.getUserDetails tRPC Query","id":"CVE-2026-122317"},"products":["kyverno"],"published":"2026-11-05","related":[{"cvss_score":10,"headline":"Kyverno Cross-Namespace Privilege Escalation via Policy apiCall","id":"CVE-2026-22039","kev_date_added":null,"published":"2026-01-27"},{"cvss_score":9.8,"headline":"CVE-2026-4789","id":"CVE-2026-4789","kev_date_added":null,"published":"2026-03-30"},{"cvss_score":9.4,"headline":"Kyverno 1.17.0 before 1.19.2 Cross-Namespace Resource Overwrite via NamespacedMutatingPolicy","id":"CVE-2026-122303","kev_date_added":null,"published":"2026-11-05"},{"cvss_score":9.4,"headline":"Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader","id":"CVE-2026-122304","kev_date_added":null,"published":"2026-11-05"},{"cvss_score":9.4,"headline":"Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath","id":"CVE-2026-122310","kev_date_added":null,"published":"2026-11-05"},{"cvss_score":9.4,"headline":"Kyverno 1.16.0 before 1.19.2 Path Traversal in Namespaced CEL Policies via resource argument","id":"CVE-2026-122311","kev_date_added":null,"published":"2026-11-05"},{"cvss_score":9.4,"headline":"Kyverno 1.17.0 before 1.19.2 Cross-Namespace Privilege Escalation via NamespacedMutatingPolicy","id":"CVE-2026-122313","kev_date_added":null,"published":"2026-11-05"}],"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":"2026-11-09","vendors":["kyverno"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-122318/"}