{"id":"CVE-2020-24916","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-24916","generatedAt":"2026-10-27T23:29:07.749Z","title":"CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.","description":"CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection.","published":"2020-09-09T19:15:21.000Z","lastModified":"2026-06-17T03:06:10.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["yaws/yaws","canonical/ubuntu linux","debian/debian linux"],"epss":{"score":0.17374,"percentile":0.97097,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 17.4%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://github.com/erlyaws/yaws/commits/master","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/vulnbe/poc-yaws-cgi-shell-injection","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html","tags":["Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4569-1/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://vuln.be/post/yaws-xxe-and-shell-injections/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2020/dsa-4773","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/erlyaws/yaws/commits/master","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/vulnbe/poc-yaws-cgi-shell-injection","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4569-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://vuln.be/post/yaws-xxe-and-shell-injections/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4773","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-24916","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."}