{
    "document": {
        "category": "csaf_security_advisory",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "nl",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            },
            {
                "category": "description",
                "text": "Fortinet heeft een kwetsbaarheid verholpen in meerdere versies van FortiSandbox.",
                "title": "Feiten"
            },
            {
                "category": "description",
                "text": "De kwetsbaarheid betreft een Cross-Site Scripting (XSS)-probleem als gevolg van onvoldoende neutralisatie van invoer tijdens het genereren van webpagina's. Een niet-geauthenticeerde aanvaller kan misbruik maken van deze kwetsbaarheid door speciaal vervaardigde HTTP-verzoeken te versturen en via social engineering een gebruiker te verleiden een kwaadaardige link of pagina te openen.\n\nHierdoor kan kwaadaardige JavaScript-code worden uitgevoerd binnen de context van de webapplicatie. Dit kan leiden tot ongeautoriseerde acties namens de gebruiker en mogelijk het compromitteren van gebruikerssessies of de integriteit van gegevens.",
                "title": "Interpretaties"
            },
            {
                "category": "description",
                "text": "Fortinet heeft updates uitgebracht om de kwetsbaarheid te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
                "title": "Oplossingen"
            },
            {
                "category": "general",
                "text": "medium",
                "title": "Kans"
            },
            {
                "category": "general",
                "text": "high",
                "title": "Schade"
            },
            {
                "category": "general",
                "text": "Improper Neutralization of Input During Web Page Generation",
                "title": "CWE-79"
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "Nationaal Cyber Security Centrum",
            "namespace": "https://www.ncsc.nl/"
        },
        "references": [
            {
                "category": "external",
                "summary": "Reference",
                "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-142"
            }
        ],
        "title": "Kwetsbaarheid verholpen in Fortinet FortiSandbox",
        "tracking": {
            "current_release_date": "2026-11-11T14:18:38.082759Z",
            "generator": {
                "date": "2025-08-04T16:30:00Z",
                "engine": {
                    "name": "V.A.",
                    "version": "1.3"
                }
            },
            "id": "NCSC-2026-0483",
            "initial_release_date": "2026-11-11T14:18:38.082759Z",
            "revision_history": [
                {
                    "date": "2026-11-11T14:18:38.082759Z",
                    "number": "1.0.0",
                    "summary": "Initiele versie"
                }
            ],
            "status": "final",
            "version": "1.0.0"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-1"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "FortiSandbox"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-2"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "FortiSandbox Cloud"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/*",
                                "product": {
                                    "name": "vers:unknown/*",
                                    "product_id": "CSAFPID-3"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "FortiSandbox PaaS"
                    }
                ],
                "category": "vendor",
                "name": "Fortinet"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-26248",
            "cwe": {
                "id": "CWE-79",
                "name": "Improper Neutralization of Input During Web Page Generation"
            },
            "notes": [
                {
                    "category": "other",
                    "text": "Improper Neutralization of Input During Web Page Generation",
                    "title": "CWE-79"
                },
                {
                    "category": "description",
                    "text": "Fortinet FortiSandbox versions 4.2 through 5.0.5 have a cross-site scripting (XSS) vulnerability caused by improper input neutralization during web page generation, exploitable by unauthenticated attackers via crafted HTTP requests and social engineering.",
                    "title": "Summary"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-1",
                    "CSAFPID-2",
                    "CSAFPID-3"
                ]
            },
            "references": [
                {
                    "category": "self",
                    "summary": "CVE-2026-26248 | NCSC-NL Website",
                    "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-26248.json"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-1",
                        "CSAFPID-2",
                        "CSAFPID-3"
                    ]
                }
            ],
            "title": "CVE-2026-26248"
        }
    ]
}