{"id":"CVE-2017-16781","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-16781","generatedAt":"2026-10-29T00:34:46.496Z","title":"The installer in MyBB before 1.8.13 has XSS.","description":"The installer in MyBB before 1.8.13 has XSS.","published":"2017-11-10T23:29:00.000Z","lastModified":"2026-06-17T01:09:55.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["mybb/mybb"],"epss":{"score":0.01581,"percentile":0.75386,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2017-11-11","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":43137,"kind":"exploit","title":"MyBB 1.8.13 - Cross-Site Scripting","url":"https://www.exploit-db.com/exploits/43137","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/43137.txt","file":"exploits/php/webapps/43137.txt","published":"2017-11-11","added":"2017-11-13","updated":"2017-11-19","author":"Pabstersac","type":"webapps","platform":"php","port":null,"verified":true,"codes":["CVE-2017-16781"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.6%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"https://blog.mybb.com/2017/11/07/mybb-1-8-13-released-security-maintenance-release/","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/43137/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://blog.mybb.com/2017/11/07/mybb-1-8-13-released-security-maintenance-release/","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/43137/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-16781","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."}