{"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": "2026-06-26T01:59:58.963Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9974b330-7714-4307-a722-5648477acda7", "shortName": "rapid7", "dateUpdated": "2026-06-26T01:59:58.963Z"}, "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": "4.0.0", "versionType": "custom"}, {"status": "unaffected", "version": "4.0.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Server-Side Cross-Site Scripting and Server-Side Request Forgery vulnerability in the markdown_to_pdf action of Rapid7 InsightConnect Markdown Plugin version 3.1.4 and earlier on Linux allows remote attackers to execute JavaScript server-side and make arbitrary outbound HTTP requests via crafted content embedded in Markdown input. The PDF rendering engine does not restrict script execution or outbound network access.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Server-Side Cross-Site Scripting and Server-Side Request Forgery vulnerability in the markdown_to_pdf action of Rapid7 InsightConnect Markdown Plugin version 3.1.4 and earlier on Linux allows remote attackers to execute JavaScript server-side and make arbitrary outbound HTTP requests via crafted content embedded in Markdown input. The PDF rendering engine does not restrict script execution or outbound network access."}]}], "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"]}], "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"}}], "credits": [{"lang": "en", "value": "Jacob Steadman, Rapid7", "type": "finder"}, {"lang": "en", "value": "Jed Starr, Rapid7", "type": "finder"}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

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{"affected": [{"configurations": [{"platform": ["linux"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,4.0.0)"}}, {"platform": ["linux"], "status": "unaffected", "versions": {"scheme": "semver", "value": "4.0.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "InsightConnect Markdown Plugin", "source": "cna", "vendor": "Rapid7"}, "product": "insightconnect_markdown_plugin", "vendor": "rapid7"}], "created": "2026-06-26T03:30:07.167447+00:00", "updated": "2026-06-26T09:35:52.939332+00:00", "vendors": ["rapid7", "rapid7$PRODUCT$insightconnect_markdown_plugin"]}