{"id":"CVE-2018-20677","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-20677","generatedAt":"2026-10-28T21:30:44.306Z","title":"In Bootstrap before 3.4.0, XSS is possible in the affix configuration target property.","description":"In Bootstrap before 3.4.0, XSS is possible in the affix configuration target property.","published":"2019-01-09T05:29:01.000Z","lastModified":"2026-06-17T01:53:18.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["getbootstrap/bootstrap"],"epss":{"score":0.03984,"percentile":0.90441,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.05386,"percentile":0.9236},{"date":"2026-09-22","score":0.03984,"percentile":0.90042}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (3.98%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHBA-2019:1076","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHBA-2019:1570","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:1456","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3023","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0132","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0133","source":"cve@mitre.org"},{"url":"https://blog.getbootstrap.com/2018/12/13/bootstrap-3-4-0/","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/twbs/bootstrap/issues/27045","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/twbs/bootstrap/issues/27915#issuecomment-452140906","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/twbs/bootstrap/issues/27915#issuecomment-452196628","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/twbs/bootstrap/pull/27047","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/52e0e6b5df827ee7f1e68f7cc3babe61af3b2160f5d74a85469b7b0e%40%3Cdev.superset.apache.org%3E","source":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E","source":"cve@mitre.org"},{"url":"https://www.tenable.com/security/tns-2021-14","source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHBA-2019:1076","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHBA-2019:1570","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:1456","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3023","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0132","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0133","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.getbootstrap.com/2018/12/13/bootstrap-3-4-0/","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/twbs/bootstrap/issues/27045","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/twbs/bootstrap/issues/27915#issuecomment-452140906","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/twbs/bootstrap/issues/27915#issuecomment-452196628","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/twbs/bootstrap/pull/27047","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/52e0e6b5df827ee7f1e68f7cc3babe61af3b2160f5d74a85469b7b0e%40%3Cdev.superset.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/tns-2021-14","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-20677","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."}