{"id":"CVE-2017-10784","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-10784","generatedAt":"2026-10-28T21:17:16.306Z","title":"The Basic authentication code in WEBrick library in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows remote attackers to inject terminal emulator escape sequences into its log and possibly execute arbitrary commands via a crafted…","description":"The Basic authentication code in WEBrick library in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows remote attackers to inject terminal emulator escape sequences into its log and possibly execute arbitrary commands via a crafted user name.","published":"2017-09-19T17:29:00.000Z","lastModified":"2026-06-17T01:00:42.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-287"],"affected":["ruby-lang/ruby"],"epss":{"score":0.16412,"percentile":0.96963,"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":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 16.4%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/100853","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1039363","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1042004","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:3485","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0378","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0583","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0585","source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html","source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201710-18","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3528-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3685-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2017/dsa-4031","source":"cve@mitre.org"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/100853","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1039363","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1042004","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:3485","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:0378","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:0583","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:0585","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201710-18","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3528-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3685-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2017/dsa-4031","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-10784","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."}