{"id":"CVE-2020-15159","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-15159","generatedAt":"2026-10-27T22:32:27.751Z","title":"baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE).","description":"baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE). This may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file.The affected components are ThemeFilesController.php and UploaderFilesController.php. This is fixed in version 4.3.7.","published":"2020-08-28T22:15:11.000Z","lastModified":"2026-06-17T02:56:10.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H"},"cwe":["CWE-79"],"affected":["basercms/basercms"],"epss":{"score":0.02152,"percentile":0.82023,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://basercms.net/security/20200827","tags":["Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66d","tags":["Patch","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-673x-f5wx-fxpw","tags":["Patch","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://basercms.net/security/20200827","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66d","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-673x-f5wx-fxpw","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-15159","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."}