{"id":"CVE-2016-8581","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-8581","generatedAt":"2026-10-28T19:46:18.420Z","title":"A persistent XSS vulnerability exists in the User-Agent header of the login process of AlienVault OSSIM and USM before 5.3.2 that allows an attacker to steal session IDs of logged in users when the current sessions are viewed by an administrator.","description":"A persistent XSS vulnerability exists in the User-Agent header of the login process of AlienVault OSSIM and USM before 5.3.2 that allows an attacker to steal session IDs of logged in users when the current sessions are viewed by an administrator.","published":"2016-10-28T15:59:05.000Z","lastModified":"2026-06-17T00:54:33.000Z","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":["alienvault/open source security information and event management","alienvault/unified security management"],"epss":{"score":0.17058,"percentile":0.97061,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.18689,"percentile":0.97206},{"date":"2026-09-22","score":0.17058,"percentile":0.96936}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2016-11-02","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":40683,"kind":"exploit","title":"Alienvault OSSIM/USM 5.3.1 - Persistent Cross-Site Scripting","url":"https://www.exploit-db.com/exploits/40683","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/40683.txt","file":"exploits/php/webapps/40683.txt","published":"2016-11-02","added":"2016-11-02","updated":"2016-11-02","author":"Peter Lapp","type":"webapps","platform":"php","port":null,"verified":true,"codes":["CVE-2016-8581"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.alienvault.com/forums/discussion/7766/security-advisory-alienvault-5-3-2-address-70-vulnerabilities"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 17.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/93862","source":"cve@mitre.org"},{"url":"https://www.alienvault.com/forums/discussion/7766/security-advisory-alienvault-5-3-2-address-70-vulnerabilities","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/40683/","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/93862","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.alienvault.com/forums/discussion/7766/security-advisory-alienvault-5-3-2-address-70-vulnerabilities","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/40683/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-8581","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."}