{"id":"CVE-2020-26800","aliases":["EUVD-2020-19336","GHSA-8pw5-pwp5-8mcx"],"status":"published","title":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially...","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01218,"percentile":0.69008,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-01-11T12:50:11Z","modified":"2026-10-20T10:53:00Z","products":[{"vendor":"ethereum","product":"aleth"}],"references":[{"url":"https://github.com/ethereum/aleth","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://ethereum.org/en/about/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://github.com/ethereum/aleth/issues/5917","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26800"},{"url":"https://github.com/advisories/GHSA-8pw5-pwp5-8mcx"}],"sources":{"cve":[{"id":"CVE-2020-26800","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","status":"published","published":"2021-01-11T12:50:11Z","modified":"2024-08-04T16:03:22.591Z","updated_at":"2026-11-02T14:35:46.129376Z"}],"euvd":[{"id":"EUVD-2020-19336","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","status":"published","published":"2021-01-11T12:50:11Z","modified":"2024-08-04T16:03:22Z","updated_at":"2026-11-03T03:07:14.653267Z"}],"ghsa":[{"id":"GHSA-8pw5-pwp5-8mcx","title":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially...","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","status":"published","published":"2022-05-24T17:38:32Z","modified":"2023-01-29T05:05:00Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:45:41.213171Z"}],"nvd":[{"id":"CVE-2020-26800","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","status":"published","published":"2021-01-11T13:15:13.26Z","modified":"2026-06-17T03:08:21.407Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:28.892872Z"}],"osv":[{"id":"CVE-2020-26800","description":"A stack overflow vulnerability in Aleth Ethereum C++ client version \u003c= 1.8.0 using a specially crafted a config.json file may result in a denial of service.","status":"published","published":"2021-01-11T13:15:13.26Z","modified":"2026-10-20T10:53:00.109597565Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:16.248747Z"}]}}