CVE-2026-30633

Deferred Deferred - Pending Action

Directory Traversal in Knowns 0.11.4

Publication date: 2026-07-21

Last updated on: 2026-07-22

Assigner: MITRE

Description

Directory traversal vulnerability in knowns-dev/knowns 0.11.4 via crafted path value to the get_doc and update_doc tools.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-21

Last Modified

2026-07-22

Generated

2026-08-11

AI Q&A

2026-07-22

EPSS Evaluated

2026-08-09

NVD

CVE-2026-30633

Affected Vendors & Products

Vendor	Product	Version / Range
knowns-dev	knowns	0.11.4

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This is a directory traversal vulnerability in the knowns-dev/knowns software version 0.11.4. It allows an attacker to access files outside the intended directory by providing a specially crafted path value to the get_doc and update_doc tools.

Detection Guidance

To detect CVE-2026-30633, inspect the knowns MCP server's get_doc and update_doc tools for improper path sanitization. Check if resolveDocPath() allows path traversal sequences like ../. Monitor for unauthorized reads or writes to .md files outside the intended .knowns/docs/ directory.

Impact Analysis

An attacker could read sensitive files on the system or modify files they should not have access to. This could lead to data leaks, unauthorized changes, or system compromise depending on the files accessed.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and access controls. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Immediately upgrade knowns-dev/knowns to a version that patches the directory traversal vulnerability in get_doc and update_doc tools. Avoid using these tools with untrusted input until patched.

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