{"id":"CVE-2026-104003","revision":"84f46a1f7c544b3c9b28d7abe544d393","records":[{"revision":"84f46a1f7c544b3c9b28d7abe544d393","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104003","aliases":[],"title":"Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content <= 4.17.5 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via Comment Content Rendered on ProfilePress User Profile 'Comments' Tab","description":"The WP User Avatar / ProfilePress plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to, and including, 4.17.5. This is due to the get_user_profile_structure() function assembling the front-end profile buffer — which includes raw comment excerpts inlined by author_comment_query() — and passing the entire buffer to do_shortcode() after only a narrow neutralization pass (ppress_neutralize_buffer_shortcodes) that blocks pp-custom-html and bracket fragments containing HTML delimiters but leaves any other well-formed shortcode intact. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary shortcodes (from any active plugin or theme) with attacker-chosen attributes by posting a comment whose body contains the shortcode markup; the shortcode is then executed server-side when any visitor loads the target's front-end profile Comments tab, letting the attacker reach capability-gated or data-returning shortcodes and inject raw HTML markup into a publicly viewable page.","state":0,"publishedAt":"2026-10-16T08:27:43.226+00:00","modifiedAt":"2026-10-16T14:59:31.371+00:00","affected":[{"ecosystem":"Vendor product","name":"Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"properfraction\",\n                    \"product\": \"Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"4.17.5\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/83adfbff-f625-4474-81b9-961c496d59a0?source=cve","https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.17.5/src/ShortcodeParser/FrontendProfileTag.php#L142","https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.17.5/src/ShortcodeParser/Builder/FrontendProfileBuilder.php#L169","https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.17.5/src/Themes/DragDrop/UserProfile/DefaultTemplate.php#L379","https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.17.5/src/Functions/GlobalFunctions.php#L1768","https://pastebin.com/raw/pCgrW6Pf","https://plugins.trac.wordpress.org/browser/wp-user-avatar/tags/4.17.6/src/ShortcodeParser/FrontendProfileTag.php"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104003","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104003","identifiers":["CVE-2026-104003"]},"retained":false,"historicalAffected":[]}],"coverage":[]}