GHSA-2v8p-3f2j-5mp7

Suggest an improvement
Source
https://github.com/advisories/GHSA-2v8p-3f2j-5mp7
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2v8p-3f2j-5mp7/GHSA-2v8p-3f2j-5mp7.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-2v8p-3f2j-5mp7
Aliases
Downstream
Related
Published
2026-08-06T19:49:48Z
Modified
2026-08-07T21:11:57.840184724Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L CVSS Calculator
Summary
Mermaid XY Charts are vulnerable to an infinite loop DoS
Details

Impact

Mermaid XY Charts are vulnerable to an infinite loop DoS attack in the setXAxisRangeData(), when configuring an X-Axis with invalid parameters.

As each loop appends an element to an array, this would generally only cause an RangeError: Invalid array length to appear after a few seconds, but may cause the page/JavaScript process to crash due to memory exhaustion, depending on the environment.

Proof-of-concept

xychart
  x-axis 1 --> 1
  line [1, 2]

Patches

This has been patched in https://github.com/mermaid-js/mermaid/commit/630aa7e5dd417e1f56bff2a1ce8df2c5ad08d289 and released in Mermaid v11.16.1.

A backport has been made for the v10 branch in ef60adc837d9d5107af21285f01e83dea309bd0a and was released in Mermaid v10.9.8

Workarounds

There are no known workarounds. Please update to the latest version or apply the patch.

References

  • https://github.com/mermaid-js/mermaid/commit/630aa7e5dd417e1f56bff2a1ce8df2c5ad08d289
  • https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1
  • https://github.com/mermaid-js/mermaid/commit/ef60adc837d9d5107af21285f01e83dea309bd0a
  • https://github.com/mermaid-js/mermaid/releases/tag/v10.9.8
Database specific 
{
    "cwe_ids": [
        "CWE-1325",
        "CWE-835"
    ],
    "github_reviewed_at": "2026-08-06T19:49:48Z",
    "nvd_published_at": null,
    "severity": "MODERATE",
    "github_reviewed": true
}
References

Affected packages

npm / mermaid

Package

Name
mermaid
View open source insights on deps.dev
Purl
pkg:npm/mermaid

Affected ranges

Type
SEMVER
Events
Introduced
10.6.0
Fixed
10.9.8

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2v8p-3f2j-5mp7/GHSA-2v8p-3f2j-5mp7.json"

npm / mermaid

Package

Name
mermaid
View open source insights on deps.dev
Purl
pkg:npm/mermaid

Affected ranges

Type
SEMVER
Events
Introduced
11.0.0-alpha.1
Fixed
11.16.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2v8p-3f2j-5mp7/GHSA-2v8p-3f2j-5mp7.json"