{"cve":"CVE-2019-14853","nvd":{"published":"2019-11-26T13:15:10.537","modified":"2026-06-17T02:19:10.320","status":"Modified","description":"An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.","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:N/A:H","score":7.5},"cwes":["CWE-755","CWE-391"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853","https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3","https://seclists.org/bugtraq/2019/Dec/33","https://www.debian.org/security/2019/dsa-4588","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853"],"products":["python-ecdsa_project:python-ecdsa"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-14853","score":0.02407,"percentile":0.84082,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pwfw-mgfj-7g3g","url":"https://osv.dev/vulnerability/GHSA-pwfw-mgfj-7g3g","summary":"ecdsa Denial of Service vulnerability in signature verification and signature malleability","modified":"2024-09-20T17:10:24.612239Z","packages":[{"ecosystem":"PyPI","name":"ecdsa","purl":"pkg:pypi/ecdsa","ranges":["<0.13.3"],"fixed":["0.13.3"]}]},{"id":"PYSEC-2019-177","url":"https://osv.dev/vulnerability/PYSEC-2019-177","summary":"","modified":"2023-11-08T04:01:11.383547Z","packages":[{"ecosystem":"PyPI","name":"ecdsa","purl":"pkg:pypi/ecdsa","ranges":["<0.13.3"],"fixed":["0.13.3"]}]}],"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."]}