TI-2026-07610 Aliases CVE-2026-8661 GHSA-6r62-qf74-xpgg

Server-Side Cross-Site Scripting and SSRF in Rapid7 InsightConnect Markdown to PDF Plugin

LOW 22CWE-79Published 2026-06-26 · Updated 2026-07-24

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00376 31st percentileScored 2026-11-07

Fix Fixed InsightConnect Markdown Plugin (Rapid7): 4.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Rapid7	InsightConnect Markdown Plugin	before 4.0.2	4.0.2	Patch available	CNA

InsightConnect Markdown Plugin VendorRapid7 Affected before 4.0.2 Fixed in 4.0.2 Patch available CNA

Remediation

Fix · CNA InsightConnect Markdown Plugin (Rapid7) Fixed in 4.0.2

Timeline

2026-10-02 Threatist record created from CVE-2026-8661
2026-10-03 Alias added: GHSA-6r62-qf74-xpgg

References

Patch 2

Advisory 1

https://github.com/rapid7/insightconnect-plugins/blob/master/plugins/markdown/help.md

TI-2023-01233 Rapid7 InsightCloudSec resource.db() method access CVSS 3.1HIGH 8.8
TI-2023-01231 Rapid7 InsightCloudSec getattr() method access CVSS 3.1HIGH 8.8
TI-2023-01232 Rapid7 InsightCloudSec box object access CVSS 3.1HIGH 8.1
TI-2024-00358 Rapid7 Minerva Armor Privilege Escalation CVSS 3.1HIGH 7.8
TI-2024-02985 Rapid7 Insight Agent Sensitive Key Exposed To Local Users CVSS 3.1MEDIUM 6.8
TI-2019-04008 Rapid7 Metasploit HTTP Handler Denial of Service CVSS 3.1HIGH 7.5

See all 139 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences