{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-58394",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-30T18:19:58.378Z",
        "datePublished": "2026-10-15T15:20:15.232Z",
        "dateUpdated": "2026-10-15T18:36:57.734Z"
    },
    "containers": {
        "cna": {
            "title": "OPNsense: Stored XSS in Administration Settings via Certificate Description",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.2,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j"
                },
                {
                    "name": "https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/opnsense/core/commit/9d0a590e9c49f4374a5539929b366123f63bc9eb"
                },
                {
                    "name": "https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/opnsense/core/commit/adcb02f8f68071e636bf9660b2cb8d0229f34674"
                },
                {
                    "name": "https://hackerask.com/posts/opnsense",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://hackerask.com/posts/opnsense"
                }
            ],
            "affected": [
                {
                    "vendor": "opnsense",
                    "product": "core",
                    "versions": [
                        {
                            "version": "< 26.1.11",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-15T15:20:15.232Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, src/www/system_advanced_admin.php reads certificate records into $a_cert but omits that array from legacy_html_escape_form_data() before rendering each certificate descr value in the SSL Certificate selector. The certificate description accepts HTML metacharacters, allowing a user with the page-system-certmanager privilege to store markup that executes when another user opens System Settings Administration. This issue is fixed in version 26.1.11."
                }
            ],
            "source": {
                "advisory": "GHSA-8pgr-x852-qx4j",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/opnsense/core/security/advisories/GHSA-8pgr-x852-qx4j",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T18:35:21.476267Z",
                                "id": "CVE-2026-58394",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-10-15T18:36:57.734Z"
                }
            }
        ]
    }
}