knowns versions before 0.30.0 fail to validate filesystem paths in MCP tool arguments, allowing attackers to read, create, overwrite and delete files outside the project directory. Attackers can supply path arguments containing directory traversal sequences to access arbitrary Markdown files accessible to the server process.
Metrics
Affected Vendors & Products
References
History
Tue, 08 Sep 2026 13:30:00 +0000
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ssvc
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Tue, 08 Sep 2026 01:15:00 +0000
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Knowns-dev
Knowns-dev knowns |
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| Vendors & Products |
Knowns-dev
Knowns-dev knowns |
Mon, 07 Sep 2026 23:15:00 +0000
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| Description | knowns versions before 0.30.0 fail to validate filesystem paths in MCP tool arguments, allowing attackers to read, create, overwrite and delete files outside the project directory. Attackers can supply path arguments containing directory traversal sequences to access arbitrary Markdown files accessible to the server process. | |
| Title | knowns before 0.30.0 Path Traversal via MCP doc and memory tools | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-07T23:03:16.548Z
Updated: 2026-09-08T12:44:26.129Z
Reserved: 2026-09-07T12:34:31.457Z
Link: CVE-2026-86439
Updated: 2026-09-08T12:44:22.335Z
Status : Deferred
Published: 2026-09-07T23:16:53.297
Modified: 2026-09-08T19:56:50.950
Link: CVE-2026-86439
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