CVE-2026-8661

{"id": "CVE-2026-8661", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8661", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T12:23:45.269146Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@rapid7.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.2}]}, "affected": [{"source": "cve@rapid7.com", "affectedData": [{"vendor": "Rapid7", "product": "InsightConnect Markdown Plugin", "versions": [{"status": "affected", "version": "0", "lessThan": "4.0.0", "versionType": "custom"}, {"status": "unaffected", "version": "4.0.0", "versionType": "custom"}], "platforms": ["Linux"], "defaultStatus": "unaffected"}]}], "published": "2026-06-26T02:16:54.640", "references": [{"url": "https://github.com/rapid7/insightconnect-plugins/blob/master/plugins/markdown/help.md", "source": "cve@rapid7.com"}, {"url": "https://github.com/rapid7/insightconnect-plugins/pull/3721", "source": "cve@rapid7.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cve@rapid7.com", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-918"}]}], "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."}], "lastModified": "2026-06-26T20:22:40.297", "sourceIdentifier": "cve@rapid7.com"}