{"id":"CVE-2026-13354","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-13354","generatedAt":"2026-10-28T02:23:58.387Z","title":"The Asset CleanUp: Page Speed Booster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 1.4.0.5 due to insufficient input sanitization and output escaping.","description":"The Asset CleanUp: Page Speed Booster plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 1.4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable on instances where combine_loaded_css has been enabled.","published":"2026-09-19T03:17:14.000Z","lastModified":"2026-09-21T13:33:33.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00419,"percentile":0.35914,"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 (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.3/classes/OptimiseAssets/OptimizeCss.php#L579","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.3/classes/OptimiseAssets/OptimizeJs.php#L824","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.4/classes/OptimiseAssets/OptimizeCss.php#L579","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/wp-asset-clean-up/tags/1.4.0.4/classes/OptimiseAssets/OptimizeJs.php#L824","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3699024%40wp-asset-clean-up&new=3699024%40wp-asset-clean-up","source":"security@wordfence.com"},{"url":"https://research.cleantalk.org/cve-2026-13354","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/4cc8ec2b-f203-4c7c-8720-043f8634a447?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-13354","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."}