{"id":"CVE-2026-56290","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-56290","summary":"Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary…","details":"Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.","published":"2026-06-29T15:16:42.360","modified":"2026-07-24T13:31:02.867","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.83254,"percentile":0.99651,"asOf":"2026-08-12"},"cisaKev":{"dateAdded":"2026-07-07","dueDate":"2026-07-10","knownRansomwareCampaignUse":false},"exploitsKnown":3,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://www.joomlack.fr/"},{"type":"FIX","url":"https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3"},{"type":"EXPLOIT","url":"https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56290"}],"provenance":{"sources":["OSV.dev","NVD","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-07-24T13:31:02.867"}}