{"id":"CVE-2026-15273","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-15273","generatedAt":"2026-10-28T11:21:33.820Z","title":"The Automatic.css plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REQUEST_URI in all version 4.0.0 due to insufficient input sanitization and output escaping.","description":"The Automatic.css plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REQUEST_URI in all version 4.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute whenever an administrator accesses the Activity Log settings page.","published":"2026-09-26T03:17:09.000Z","lastModified":"2026-09-28T15:16:05.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00215,"percentile":0.11866,"date":"2026-10-27","history":[{"date":"2026-09-26","score":0.00215,"percentile":0.10753}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-26T03:17:09.000Z","detail":{"score":"6.4","severity":"MEDIUM","publishedAt":"2026-09-26T03:17:08.900Z"},"summary":"New CVE, medium severity (CVSS 6.4)."}],"references":[{"url":"https://automaticcss.com/changelogs/","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Helpers/Logger.php#L187","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Lib/WideEvents/Formatter/JsonFormatter.php#L25","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Plugin.php#L175","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/UI/Settings_Page/Activity_Log.php#L90","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/07d697c5-1c15-4d3a-8637-cc4fd408f209?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-15273","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."}