{"id":"CVE-2019-14859","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-14859","generatedAt":"2026-10-28T23:58:03.283Z","title":"Without proper verification, an attacker could use a malleable signature to create false transactions.","description":"A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.","published":"2020-01-02T15:15:12.000Z","lastModified":"2026-06-17T02:19:11.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-347"],"affected":["python-ecdsa project/python-ecdsa","redhat/ceph storage","redhat/openstack","redhat/virtualization"],"epss":{"score":0.01534,"percentile":0.74677,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://github.com/warner/python-ecdsa/issues/114","tags":["Exploit","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3","tags":["Release Notes","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://pypi.org/project/ecdsa/0.13.3/","tags":["Release Notes","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859","tags":["Exploit","Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/warner/python-ecdsa/issues/114","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://pypi.org/project/ecdsa/0.13.3/","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-14859","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}