{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-111048",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-15T12:47:13.664Z",
        "datePublished": "2026-11-02T17:46:11.754Z",
        "dateUpdated": "2026-11-02T17:46:11.754Z"
    },
    "containers": {
        "cna": {
            "title": "FOSSBilling: Low-privileged staff can run JavaScript in administrators' browsers via stored XSS in support ticket notes",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.4,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-493h-fvcx-6q62",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-493h-fvcx-6q62"
                },
                {
                    "name": "https://github.com/FOSSBilling/FOSSBilling/pull/4548",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/FOSSBilling/FOSSBilling/pull/4548"
                },
                {
                    "name": "https://github.com/FOSSBilling/FOSSBilling/commit/87528920b6cb1ba6f113583253eb4d7abdd1d8c6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/FOSSBilling/FOSSBilling/commit/87528920b6cb1ba6f113583253eb4d7abdd1d8c6"
                },
                {
                    "name": "https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.9"
                }
            ],
            "affected": [
                {
                    "vendor": "FOSSBilling",
                    "product": "FOSSBilling",
                    "versions": [
                        {
                            "version": ">= 0.1.0, < 0.8.9",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-02T17:46:11.754Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.9, the admin/support/note_create endpoint stores the note parameter without sanitization in the support_ticket_note table, and src/modules/Support/templates/admin/mod_support_tickets.html.twig renders each stored support ticket note through innerHTML in the admin ticket list. A staff user with only the support.manage_tickets permission can store HTML or JavaScript that executes when another staff member opens the ticket notes. The script runs with the viewing staff member's session and privileges, can read a CSRF token and accessible client or invoice data, and can perform administrative actions available to the viewer, including a Super Administrator. The ticket detail page is not affected because its Twig rendering uses autoescaping. This issue is fixed in version 0.8.9."
                }
            ],
            "source": {
                "advisory": "GHSA-493h-fvcx-6q62",
                "discovery": "UNKNOWN"
            }
        }
    }
}