{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-40596",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-04-14T14:07:59.641Z",
        "datePublished": "2026-05-22T19:25:32.812Z",
        "dateUpdated": "2026-05-22T20:10:16.176Z"
    },
    "containers": {
        "cna": {
            "title": "MantisBT is vulnerable to XSS and potential account takeover via user font family preference update",
            "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": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "subAvailabilityImpact": "LOW",
                        "baseScore": 7.2,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:L",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j"
                },
                {
                    "name": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3"
                },
                {
                    "name": "https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d"
                },
                {
                    "name": "https://mantisbt.org/bugs/view.php?id=37011",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://mantisbt.org/bugs/view.php?id=37011"
                },
                {
                    "name": "https://mantisbt.org/bugs/view.php?id=37016",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://mantisbt.org/bugs/view.php?id=37016"
                }
            ],
            "affected": [
                {
                    "vendor": "mantisbt",
                    "product": "mantisbt",
                    "versions": [
                        {
                            "version": ">= 2.11.0, < 2.28.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-05-22T19:25:32.812Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability (CSP bypass, see GHSA-9c3j-xm6v-j7j3), the attacker could achieve account takeover. This issue has been fixed in version 2.28.2."
                }
            ],
            "source": {
                "advisory": "GHSA-j3v9-553h-x28j",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-22T20:10:08.492596Z",
                                "id": "CVE-2026-40596",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-05-22T20:10:16.176Z"
                }
            }
        ]
    }
}