{"answers":{"affected":"4 open source packages ship an affected version, including github.com/kyverno/kyverno and kyverno.","exploited":"There is no known exploitation of CVE-2023-54356 in the wild and no public exploit code.","fix":"Upgrade github.com/kyverno/kyverno to 1.9.5 or later.","what":"CVE-2023-54356 is a critical vulnerability in kyverno, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-54356 and fix it if it is affected.\n\nWhat it is: CVE-2023-54356 is a critical vulnerability in kyverno, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-54356 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/kyverno/kyverno (Go): affected all versions; fixed in 1.9.5\n- github.com/kyverno/kyverno (Go): affected all versions; fixed in 1.9.5\n- github.com/kyverno/kyverno (Go): affected all versions; fixed in 1.9.5\n- kyverno (Bitnami): affected all versions; fixed in 1.9.5\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-2023-54356/ (Markdown: https://insights.sbomify.com/CVE-2023-54356/index.md)","id":"CVE-2023-54356","markdown":"https://insights.sbomify.com/CVE-2023-54356/index.md","name":"CVE-2023-54356","record":{"aliases":["BIT-kyverno-2023-54356","CLEANSTART-2026-MH57563","GHSA-hgv6-w7r3-w4qw","GHSA-x85p-7rrx-px32","GO-2023-1804"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes policy engine","requires_auth":"none","summary":"Kyverno supports insecure 3DES cipher suites, allowing attackers to recover plaintext via Sweet32 attacks on long-lived TLS connections.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-326","name":"Inadequate Encryption Strength"}],"description":"Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA and TLS_RSA_WITH_3DES_EDE_CBC_SHA) on their TLS endpoints. These 64-bit block ciphers are vulnerable to the Sweet32 attack (CVE-2016-2183), which, over very long-lived TLS connections carrying large volumes of traffic, could allow an attacker to recover small amounts of plaintext. The issue is fixed in Kyverno 1.9.5 and 1.10.0.","ecosystems":["Bitnami","Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites","id":"CVE-2023-54356","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"weak_cryptography","year":"2023"},"n_packages":4,"n_references":2,"next":{"headline":"Joomla com_booking 2.4.9 Information Disclosure via Account Enumeration","id":"CVE-2023-54357"},"packages":[{"ecosystem":"Bitnami","fixed":["1.9.5"],"introduced":["0"],"last_affected":[],"package":"kyverno","purl":"pkg:bitnami/kyverno","source":"BIT-kyverno-2023-54356"},{"ecosystem":"Go","fixed":["1.9.5"],"introduced":["0"],"last_affected":[],"package":"github.com/kyverno/kyverno","purl":null,"source":"GHSA-hgv6-w7r3-w4qw"},{"ecosystem":"Go","fixed":["1.9.5"],"introduced":["0"],"last_affected":[],"package":"github.com/kyverno/kyverno","purl":"pkg:golang/github.com/kyverno/kyverno","source":"GHSA-hgv6-w7r3-w4qw"},{"ecosystem":"Go","fixed":["1.9.5"],"introduced":["0"],"last_affected":[],"package":"github.com/kyverno/kyverno","purl":"pkg:golang/github.com/kyverno/kyverno","source":"GO-2023-1804"}],"prev":{"headline":"PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve","id":"CVE-2023-54355"},"products":["kyverno"],"published":"2026-09-01","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-10-08","vendors":["kyverno"]},"summary":"Kyverno supports insecure 3DES cipher suites, allowing attackers to recover plaintext via Sweet32 attacks on long-lived TLS connections.","url":"https://insights.sbomify.com/CVE-2023-54356/"}