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CVE-2025-54880

22
FAUCET Score

CVE-2025-54880 describes a cross-site scripting (XSS) vulnerability in Mermaid, a JavaScript diagramming tool, specifically affecting versions 11.9.0 and earlier. The flaw arises from user-supplied input for architecture diagram icons being improperly handled by the d3 html() method. This medium-severity vulnerability (CVSS 6.1) requires user interaction and can lead to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.1.0, < 11.10.0CPE matchmatch criteria
cpe:2.3:a:mermaid_project:mermaid:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

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
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
29.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 29th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: mermaidFixed in: 11.10.0

Vendor Advisories (1)

npmGHSA-8gwm-58g9-j8pwmedium

Mermaid does not properly sanitize architecture diagram iconText leading to XSS

Aug 19, 2025

References

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