CVE-2025-54880
Mermaid does not properly sanitize architecture diagram iconText leading to XSS
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.
INFO
Published Date :
Aug. 19, 2025, 5:15 p.m.
Last Modified :
Oct. 20, 2025, 3:12 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Mermaid to version 11.10.0 or later.
- Review and sanitize user input for diagram icons.
- Validate icon names against an allowlist.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-54880.
| URL | Resource |
|---|---|
| https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc | Patch |
| https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4 | Product |
| https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw | Vendor Advisory Exploit Patch |
| https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw | Vendor Advisory Exploit Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-54880 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-54880
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-54880 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-54880 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 20, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:mermaid_project:mermaid:*:*:*:*:*:node.js:*:* versions from (including) 11.1.0 up to (excluding) 11.10.0 Added Reference Type GitHub, Inc.: https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc Types: Patch Added Reference Type GitHub, Inc.: https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4 Types: Product Added Reference Type CISA-ADP: https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw Types: Exploit, Patch, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw Types: Exploit, Patch, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 19, 2025
Action Type Old Value New Value Added Reference https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw -
New CVE Received by [email protected]
Aug. 19, 2025
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CWE CWE-79 Added Reference https://github.com/mermaid-js/mermaid/commit/2aa83302795183ea5c65caec3da1edd6cb4791fc Added Reference https://github.com/mermaid-js/mermaid/commit/734bde38777c9190a5a72e96421c83424442d4e4 Added Reference https://github.com/mermaid-js/mermaid/security/advisories/GHSA-8gwm-58g9-j8pw