{"id":"CVE-2020-25658","aliases":["GHSA-xrx6-fmxq-rjj2","PYSEC-2020-100"],"url":"https://o3.security/vulnerability/CVE-2020-25658","summary":"Timing attacks in python-rsa","details":"It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.","published":"2020-11-12T14:15:22.877Z","modified":"2026-07-08T05:56:14.176675187Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"rsa","fixedVersion":"4.7"}],"fix":{"url":"https://github.com/sybrenstuvel/python-rsa/commit/dae8ce0d85478e16f2368b2341632775313d41ed","label":"sybrenstuvel/python-rsa@dae8ce0"},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25658"},{"type":"REPORT","url":"https://github.com/sybrenstuvel/python-rsa/issues/165"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25658"},{"type":"WEB","url":"https://github.com/sybrenstuvel/python-rsa/commit/dae8ce0d85478e16f2368b2341632775313d41ed"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2020-25658"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1889972"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xrx6-fmxq-rjj2"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-100.yaml"},{"type":"PACKAGE","url":"https://github.com/sybrenstuvel/python-rsa"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2022:1716"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2021:0637"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2020:5634"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:56:14.176675187Z"}}