Knowns-dev Knowns up to 0.29.x Import Routes Name path traversal

Summaryinfo

A vulnerability was found in Knowns-dev Knowns up to 0.29.x. It has been declared as critical. The impacted element is an unknown function of the component Import Routes. Such manipulation of the argument Name leads to path traversal. This vulnerability is uniquely identified as CVE-2026-86542. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Knowns-dev Knowns up to 0.29.x. Affected by this issue is some unknown processing of the component Import Routes. The manipulation of the argument name with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity, and availability. CVE summarizes:

knowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory. Attackers can supply traversal sequences in the name parameter to escape the imports directory and overwrite arbitrary files writable by the server process.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-86542 since 09/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 0.30.0 eliminates this vulnerability.

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Productinfo

Vendor

• Knowns-dev

Name

• Knowns

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29

Website

• Product: https://github.com/knowns-dev/knowns/

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