{"id":"CVE-2026-3891","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-3891","generatedAt":"2026-10-31T05:59:06.065Z","title":"The Pix for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing capability check and missing file type validation in the 'lkn_pix_for_woocommerce_c6_save_settings' function in all versions up to, and including, 1.5.0.","description":"The Pix for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing capability check and missing file type validation in the 'lkn_pix_for_woocommerce_c6_save_settings' function in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.","published":"2026-03-13T19:55:11.000Z","lastModified":"2026-06-17T10:44:23.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","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"},"cwe":["CWE-434"],"affected":[],"epss":{"score":0.32435,"percentile":0.98331,"date":"2026-10-30","history":[{"date":"2026-09-24","score":0.29729,"percentile":0.98135},{"date":"2026-10-25","score":0.31832,"percentile":0.98288}]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2026-08-17","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52642,"kind":"exploit","title":"WooCommerce 1.5.0 - Unauthenticated Arbitrary File Upload","url":"https://www.exploit-db.com/exploits/52642","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/52642.py","file":"exploits/multiple/webapps/52642.py","published":"2026-08-17","added":"2026-08-17","updated":"2026-08-17","author":"Mohammad Hossein Sadeghian","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2026-3891"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 32.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/payment-gateway-pix-for-woocommerce/tags/1.4.0/Includes/LknPaymentPixForWoocommercePixC6.php#L694","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset/3480639/payment-gateway-pix-for-woocommerce#file56","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/20188fd3-c330-4c76-912b-72731e14c450?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3891","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."}