Description

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.23, the Markdown viewer component renders Mermaid diagrams with securityLevel: "loose" and injects the SVG output via innerHTML. This configuration explicitly allows interactive event bindings in Mermaid diagrams, enabling XSS through Mermaid's click directive which can execute arbitrary JavaScript. Any field that renders markdown (incident descriptions, status page announcements, monitor notes) is vulnerable. This vulnerability is fixed in 10.0.23.

INFO

Published Date :

2026-03-12T21:29:00.510Z

Last Modified :

2026-03-14T03:43:13.858Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-32308 vulnerability.

Vendors Products
Oneuptime
  • Oneuptime
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32308.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact