CVE-2026-88938: knowns path traversal in code.find MCP tool

CVE-2026-88938 · Severity: medium · CVSS 6.5 · Published 2026-09-10

knowns is a tool that manages AI agent interactions, including a code.find feature that allows searching source files. A flaw in version 0.33.0 and earlier fails to properly restrict file access to the project directory, allowing attackers to read arbitrary files from the host system by supplying manipulated file paths. This could expose sensitive source code, configuration files, or other confidential data stored outside the intended project.

Technologies: Knowns-Dev Knowns. Vendors: Knowns-Dev.

Quick answers

Is CVE-2026-88938 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-88938 being exploited in the wild.
How severe is CVE-2026-88938?
Medium severity, with a CVSS score of 6.5, published 10 September 2026.
Which products and versions are affected?
Knowns-Dev Knowns through 0.33.0.
Is there a fix for CVE-2026-88938?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-88938 attacked?
It is attacked over the network.
Am I affected by CVE-2026-88938?
Check whether you run Knowns-Dev Knowns at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a path traversal flaw in the code.find MCP (Model Context Protocol) tool handler. The vulnerable component fails to validate and confine the path argument to the project root directory, allowing attackers to use absolute paths or relative traversal sequences (e.g., "../../../etc/passwd") to access files outside the intended scope. The attack requires control over the path argument supplied to the code.find tool, which is reachable by AI agent sessions interacting with knowns. An attacker can retrieve the full contents of arbitrary files on the host system. Patches are expected in versions after 0.33.0.

Affected products

  • knowns-dev knowns through 0.33.0

Timeline

  • 2026-09-10: disclosed

References

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