UBUNTU-CVE-2026-71438

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Source
https://ubuntu.com/security/CVE-2026-71438
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71438.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-71438
Upstream
Published
2026-08-07T00:00:00Z
Modified
2026-08-07T17:45:29.944172146Z
Severity
  • 2.4 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:N/VI:L/VA:L/SC:H/SI:H/SA:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters (mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig) merge caller-supplied configuration into Mermaid's internal config using the assignWithDepth deep-merge helper, which is vulnerable to prototype pollution. This is only exploitable if an application forwards untrusted data directly into one of these configuration entry points, which is outside their documented usage; diagram-supplied configuration (e.g. %%{init: {}}%% or YAML frontmatter) is not affected. This issue is fixed in versions 10.9.8 and 11.16.1.

References

Affected packages

Ubuntu:22.04:LTS / node-mermaid

Package

Name
node-mermaid
Purl
pkg:deb/ubuntu/node-mermaid?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.7.0+ds+~cs27.17.17-3
8.13.3+ds+~cs26.13.21-1
8.13.3+ds+~cs26.13.21-2
8.13.8+~cs10.4.16-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-mermaid",
            "binary_version": "8.13.8+~cs10.4.16-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71438.json"