VulnSocial

CVE-2026-8661Disclosure

LOWCVSS 4.8 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-26: 1Technical Details · 2026-06-26: 106-26
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-8661 Server-Side XSS and SSRF in Rapid7 InsightConnect Markdown Plugin 3.1.4 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-8661

    Post summary

    The notice identifies CVE‑2026‑8661 as a Server‑Side XSS and SSRF flaw in Rapid7 InsightConnect Markdown Plugin 3.1.4, offering a link to vulnerability details but no PoC, exploit, or patch information.

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    4.1K followersView on X

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