{"id":"CVE-2016-6853","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-6853","generatedAt":"2026-10-28T19:46:15.598Z","title":"Script code and references to external websites can be injected to the names of PGP public keys.","description":"An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code and references to external websites can be injected to the names of PGP public keys. When requesting that key later on using a specific URL, such script code might get executed. In case of injecting external websites, users might get lured into a phishing scheme. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.).","published":"2016-12-15T06:59:25.000Z","lastModified":"2026-06-17T00:51:53.000Z","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":["open-xchange/ox guard"],"epss":{"score":0.02441,"percentile":0.84224,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2016-09-13","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":40377,"kind":"exploit","title":"Open-Xchange Guard 2.4.2 - Multiple Cross-Site Scripting Vulnerabilities","url":"https://www.exploit-db.com/exploits/40377","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/webapps/40377.txt","file":"exploits/linux/webapps/40377.txt","published":"2016-09-13","added":"2016-09-13","updated":"2016-10-14","author":"Benjamin Daniel Mussler","type":"webapps","platform":"linux","port":null,"verified":false,"codes":["CVE-2016-6854","CVE-2016-6853","CVE-2016-6851"],"tags":null,"aliases":null,"applicationUrl":"http://www.exploit-db.comopen-xchange-guard_2.4.2.orig.tar.bz2","screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 2.4%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/539395/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/92920","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/40377/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/539395/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92920","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/40377/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-6853","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."}