{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-8661",
        "assignerOrgId": "9974b330-7714-4307-a722-5648477acda7",
        "state": "PUBLISHED",
        "assignerShortName": "rapid7",
        "dateReserved": "2026-05-15T06:29:03.740Z",
        "datePublished": "2026-06-26T01:59:58.963Z",
        "dateUpdated": "2026-07-24T03:10:45.058Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "9974b330-7714-4307-a722-5648477acda7",
                "shortName": "rapid7",
                "dateUpdated": "2026-07-24T03:10:45.058Z"
            },
            "title": "Server-Side Cross-Site Scripting and SSRF in Rapid7 InsightConnect Markdown to PDF Plugin",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-79",
                            "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        },
                        {
                            "lang": "en",
                            "cweId": "CWE-918",
                            "description": "CWE-918 Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "Server-Side Request Forgery, Information Disclosure"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Rapid7",
                    "product": "InsightConnect Markdown Plugin",
                    "platforms": [
                        "Linux"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "4.0.2",
                            "versionType": "custom"
                        },
                        {
                            "status": "unaffected",
                            "version": "4.0.2",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Server-Side Request Forgery in the markdown_to_pdf action of Rapid7 InsightConnect Markdown Plugin on Linux in versions prior to 4.0.2 allows remote attackers to make arbitrary outbound HTTP requests via unsanitized resource-loading HTML elements (img/src, CSS url(), @import) embedded in Markdown input. The initial fix in 4.0.0 disabled JavaScript but did not neutralize resource-loading vectors. Resolved in 4.0.2 by sanitizing HTML with an allowlist of tags, attributes, and URL schemes.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "Server-Side Request Forgery in the markdown_to_pdf action of Rapid7 InsightConnect Markdown Plugin on Linux in versions prior to 4.0.2 allows remote attackers to make arbitrary outbound HTTP requests via unsanitized resource-loading HTML elements (img/src, CSS url(), @import) embedded in Markdown input. The initial fix in 4.0.0 disabled JavaScript but did not neutralize resource-loading vectors. Resolved in 4.0.2 by sanitizing HTML with an allowlist of tags, attributes, and URL schemes."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/rapid7/insightconnect-plugins/blob/master/plugins/markdown/help.md",
                    "tags": [
                        "vendor-advisory"
                    ]
                },
                {
                    "url": "https://github.com/rapid7/insightconnect-plugins/pull/3721",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/rapid7/insightconnect-plugins/pull/4010",
                    "tags": [
                        "patch"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 4.8,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"
                    }
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to InsightConnect Markdown Plugin version 4.0.2 or later.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>Upgrade to InsightConnect Markdown Plugin version 4.0.2 or later.</p>"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Jacob Steadman, Rapid7",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Jed Starr, Rapid7",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "SnailSploit (Kai Aizen)",
                    "type": "reporter"
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-26T12:23:45.269146Z",
                                "id": "CVE-2026-8661",
                                "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": "2026-06-26T12:24:03.302Z"
                }
            }
        ]
    }
}