{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86596", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-09-08T08:18:31.098Z", "datePublished": "2026-11-02T21:30:23.199Z", "dateUpdated": "2026-11-02T21:30:23.199Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-11-02T21:30:23.199Z"}, "affected": [{"vendor": "clavaque", "product": "s2Member \u2013 Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "260927", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The s2Member plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, <= 260927 via the 'item_name' parameter parameter. This is due to insufficient sanitization in strip_php_tags_deep(), which only strips literal '<?' sequences, combined with a post-interpolation placeholder cleanup that reassembles a valid '<?php' opener after the attacker-controlled value has already been embedded in the email template. This makes it possible for authenticated attackers, with custom-level access and above, to execute code on the server."}], "title": "s2Member <= 260927 - Unauthenticated Remote Code Execution via 'item_name' IPN Parameter", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/bbe64cd3-c5ca-4867-90de-4784510a1126?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/utilities.inc.php#L49"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/paypal-notify-in-web-accept-sp.inc.php#L138"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/paypal-notify-in-web-accept-sp.inc.php#L131"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/paypal-notify-in-web-accept-sp.inc.php#L104"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/utils-strings.inc.php#L201"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/paypal-notify-in.inc.php#L49"}, {"url": "https://plugins.trac.wordpress.org/browser/s2member/tags/260829/src/includes/classes/paypal-notify-in-subscr-or-wa-w-level.inc.php#L514"}, {"url": "https://plugins.trac.wordpress.org/changeset/3722434/s2member"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-94 Improper Control of Generation of Code", "cweId": "CWE-94", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "credits": [{"lang": "en", "type": "finder", "value": "khanhnv"}], "timeline": [{"time": "2026-10-14T04:20:37.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-11-02T08:59:41.000Z", "lang": "en", "value": "Disclosed"}]}}}