CVE-2025-54880

MEDIUM EPSS 26.1%
Published Aug 19, 202510mo ago · Modified Jun 17, 20262w ago
5.1 CVSS 4.0
Medium
Find Similar
Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 11.9.0 and earlier, user supplied input for architecture diagram icons is passed to the d3 html() method, creating a sink for cross site scripting. This vulnerability is fixed in 11.10.0.

CVSS Details

Base Score
5.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
26.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
mermaid_projectmermaid*≥11.1.0  –  <11.10.0

References 3

  • github.com https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc
    Patch
  • github.com https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4
    Product
  • github.com https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc
    Patch
  • github.com https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw
    ExploitPatchVendor Advisory