GHSA-m4gq-x24j-jpmf
Prototype pollution vulnerability found in Mermaid's bundled version of DOMPurify
GHSA-m4gq-x24j-jpmf is a high vulnerability (CVSS 7.0) in mermaid, published October 22, 2024. No source lists public exploit code. Fixed in mermaid 10.9.3.
- Severity
- 7.0 HighCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
10.9.3mermaid +1 more
Description
The following bundled files within the Mermaid NPM package contain a bundled version of DOMPurify that is vulnerable to https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674, potentially resulting in an XSS attack.
This affects the built:
dist/mermaid.min.jsdist/mermaid.jsdist/mermaid.esm.mjsdist/mermaid.esm.min.mjs
This will also affect users that use the above files via a CDN link, e.g. https://cdn.jsdelivr.net/npm/mermaid@10.9.2/dist/mermaid.min.js
Users that use the default NPM export of mermaid, e.g. import mermaid from 'mermaid', or the dist/mermaid.core.mjs file, do not use this bundled version of DOMPurify, and can easily update using their package manager with something like npm audit fix.
Patches
developbranch: 6c785c93166c151d27d328ddf68a13d9d65adc00- backport to v10: 92a07ffe40aab2769dd1c3431b4eb5beac282b34
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- Low
Affected packages
What each source reports
GitHub Advisories Score used
Prototype pollution vulnerability found in Mermaid's bundled version of DOMPurify
The following bundled files within the Mermaid NPM package contain a bundled version of DOMPurify that is vulnerable to https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674, potentially resulting in an XSS attack.
This affects the built:
dist/mermaid.min.jsdist/mermaid.jsdist/mermaid.esm.mjsdist/mermaid.esm.min.mjs
This will also affect users that use the above files via a CDN link, e.g. https://cdn.jsdelivr.net/npm/mermaid@10.9.2/dist/mermaid.min.js
Users that use the default NPM export of mermaid, e.g. import mermaid from 'mermaid', or the dist/mermaid.core.mjs file, do not use this bundled version of DOMPurify, and can easily update using their package manager with something like npm audit fix.
Patches
developbranch: 6c785c93166c151d27d328ddf68a13d9d65adc00- backport to v10: 92a07ffe40aab2769dd1c3431b4eb5beac282b34
- Record
GHSA-m4gq-x24j-jpmf- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L - Weakness
- CWE-1321, CWE-1395
- Updated
- 2026-11-02
OSV
Prototype pollution vulnerability found in Mermaid's bundled version of DOMPurify
The following bundled files within the Mermaid NPM package contain a bundled version of DOMPurify that is vulnerable to https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674, potentially resulting in an XSS attack.
This affects the built:
dist/mermaid.min.jsdist/mermaid.jsdist/mermaid.esm.mjsdist/mermaid.esm.min.mjs
This will also affect users that use the above files via a CDN link, e.g. https://cdn.jsdelivr.net/npm/mermaid@10.9.2/dist/mermaid.min.js
Users that use the default NPM export of mermaid, e.g. import mermaid from 'mermaid', or the dist/mermaid.core.mjs file, do not use this bundled version of DOMPurify, and can easily update using their package manager with something like npm audit fix.
Patches
developbranch: 6c785c93166c151d27d328ddf68a13d9d65adc00- backport to v10: 92a07ffe40aab2769dd1c3431b4eb5beac282b34
- Record
GHSA-m4gq-x24j-jpmf- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L - Weakness
- CWE-1321, CWE-1395
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674