{"cve":"CVE-2023-0466","nvd":{"published":"2023-03-28T15:15:06.880","modified":"2026-10-14T21:17:12.893","status":"Modified","description":"The function X509_VERIFY_PARAM_add0_policy() is documented to\nimplicitly enable the certificate policy check when doing certificate\nverification. However the implementation of the function does not\nenable the check which allows certificates with invalid or incorrect\npolicies to pass the certificate verification.\n\nAs suddenly enabling the policy check could break existing deployments it was\ndecided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy()\nfunction.\n\nInstead the applications that require OpenSSL to perform certificate\npolicy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly\nenable the policy check by calling X509_VERIFY_PARAM_set_flags() with\nthe X509_V_FLAG_POLICY_CHECK flag argument.\n\nCertificate policy checks are disabled by default in OpenSSL and are not\ncommonly used by applications.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-295"],"references":["http://www.openwall.com/lists/oss-security/2023/09/28/4","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0d16b7e99aafc0b4a6d729eec65a411a7e025f0a","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=51e8a84ce742db0f6c70510d0159dad8f7825908","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=73398dea26de9899fb4baa94098ad0a61f435c72","https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc814a30fc4f0bc54fcea7d9a7462f5457aab061"],"products":["openssl:openssl"],"source":"nvd","synced_at":"2026-10-19T21:37:48.383111019+00:00"},"epss":{"cve":"CVE-2023-0466","score":0.01772,"percentile":0.77994,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}