HTML Injection Vulnerability in Pivotick's Markdown Node-Reference Renderer
CVE-2026-66921

6.3MEDIUM

Key Information:

Vendor

Pivotick

Status
Pivotick
Vendor
CVE Published:
28 July 2026

What is CVE-2026-66921?

The Markdown node-reference renderer from Pivotick is vulnerable due to improper handling of user-controlled node names, which allows for HTML metacharacter injection. Attackers can craft malicious node names containing HTML tags and JavaScript, and when rendered in an environment that lacks adequate sanitization, such as DOMPurify, this can lead to arbitrary JavaScript execution in the user's browser. This exploit can compromise the user's session and enable unauthorized access to sensitive same-origin information or the modification of displayed content.

Affected Version(s)

pivotick 0 <= 1.4.0

References

https://github.com/Pivotick/Pivotick/commit/4c13ff2b0ec76...
patch

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jeroen Pinoy
Sami Mokaddem
.