{"cve_id":"CVE-2026-56290","published":"2026-06-29T15:16:42.360000+00:00","last_modified":"2026-10-25T21:10:00.770000+00:00","vuln_status":"Analyzed","description":"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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-434"],"in_kev":true,"kev_date_added":"2026-07-07","kev_ransomware":false,"epss_score":0.30866,"epss_percentile":0.98252,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-28T03:39:13.774223+00:00","first_seen":"2026-06-29T15:16:42.360000+00:00","kev_first_seen":"2026-07-07T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["joomlack"],"products":["page_builder_ck"],"affected":[{"vendor":"joomlack","product":"page_builder_ck","ranges":["< 3.6.0"]}]}