{"schema":"threatline.record/2","record":{"id":"CVE-2026-56290","aliases":[],"summary":"Joomlack Page Builder Improper Access Control Vulnerability","details":"Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload.","categories":["Unclassified"],"product":"Page Builder","vendor":"Joomlack","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-56290","source_modified_at":"2026-10-08T04:47:28.097Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"JoomlaCK.fr Page Builder CK extension for Joomla","vendor":"joomlack.fr","versions":[{"status":"affected","version":"1.0-3.6.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":10,"severity":"Critical","kev":{"listed":true,"date_added":"2026-07-07","due_date":"2026-07-10","required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","ransomware_campaign_use":"Unknown","forensic_triage":true},"epss":{"probability":0.30866,"percentile":0.98255,"score_date":"2026-10-23"},"published_at":"2026-06-29T14:31:37.952Z","modified_at":"2026-10-08T04:47:28.097Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-56290","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-08T04:47:28.097Z"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/52626","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-07-08"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-56290.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-56290","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Exploit-DB","Nuclei","EPSS"],"references":[{"url":"https://www.joomlack.fr/en/joomla-extensions/page-builder-ck","source":"CISA KEV"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56290","source":"CISA KEV"},{"source":"CVE List","url":"https://www.joomlack.fr/","tags":["product"]},{"source":"CVE List","url":"https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3","tags":["patch"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56290","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2026-07-08T03:56:32.575114Z"},"exploits":[{"added":"2026-07-08","date":"2026-07-08","kind":"Webapps exploit","name":"Joomla Page Builder CK  3.5.10 -  Arbitrary File Upload","source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/52626","verified":false},{"kind":"Scanner template","name":"Page Builder CK <= 3.5.10 - Unauthenticated Arbitrary File Upload","source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-56290.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-08T04:47:28.097Z","content_hash":"d7f62abfb4dc900ab8444f5cc9480cfb30ff6d46d092a6e4d4146fcc0b7a93c4"}}