CVE-2026-7159 — mkdocs-mcp-plugin
HIGHCVE-2026-7159 is a high-severity (CVSS 7.3) Path Traversal vulnerability in mkdocs-mcp-plugin. No vendor fix is recorded yet; mitigation options are listed below.
mkdocs-mcp-plugin has a Path Traversal issue
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-7159 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
mkdocs-mcp-pluginReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability was found in douinc mkdocs-mcp-plugin up to 0.4.1. This affects the function read_document/list_documents of the file server.py. Performing a manipulation of the argument docs_dir/file_path results in path traversal. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor confirms, that the "fix will be published within a few days."
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | mkdocs-mcp-plugin | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mkdocs-mcp-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of mkdocs-mcp-plugin has shipped for CVE-2026-7159 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-7159 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-7159. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-7159 in your dependencies?
O3 Security finds CVE-2026-7159 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.