{"id":"CVE-2023-50781","aliases":["GHSA-944j-8ch6-rf6x","PYSEC-2026-1595"],"url":"https://o3.security/vulnerability/CVE-2023-50781","summary":"m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657","details":"A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.","published":"2024-02-05T21:15:10.970Z","modified":"2026-07-07T17:56:27.469638616Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.01124,"percentile":0.64686,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"m2crypto","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-50781"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2254426"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50781"},{"type":"PACKAGE","url":"https://gitlab.com/m2crypto/m2crypto"},{"type":"WEB","url":"https://gitlab.com/m2crypto/m2crypto/-/issues/342"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-07T17:56:27.469638616Z"}}