{"id":"CVE-2017-17672","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-17672","generatedAt":"2026-10-29T01:51:36.250Z","title":"In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's…","description":"In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.","published":"2017-12-14T00:29:00.000Z","lastModified":"2026-06-17T01:11:28.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-502"],"affected":["vbulletin/vbulletin"],"epss":{"score":0.15189,"percentile":0.96732,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.11083,"percentile":0.95786},{"date":"2026-09-22","score":0.15189,"percentile":0.96594}]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2017-12-13","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":43362,"kind":"exploit","title":"vBulletin 5.x - 'cacheTemplates' Remote Arbitrary File Deletion","url":"https://www.exploit-db.com/exploits/43362","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/43362.md","file":"exploits/multiple/webapps/43362.md","published":"2017-12-13","added":"2017-12-18","updated":"2019-10-01","author":"SecuriTeam","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2017-17672"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://blogs.securiteam.com/index.php/archives/3573"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 15.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://blogs.securiteam.com/index.php/archives/3573","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/43362/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://blogs.securiteam.com/index.php/archives/3573","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/43362/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-17672","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."}