knowns-dev knowns up to 0.29.x handleCodeReplace path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in knowns-dev knowns up to 0.29.x. This affects the function handleCodeReplace. Performing a manipulation results in path traversal. This vulnerability is reported as CVE-2026-86541. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in knowns-dev knowns up to 0.29.x. It has been classified as critical. This affects the function handleCodeReplace. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

knowns versions before 0.30.0 contain a path traversal vulnerability in the handleCodeReplace() function that allows attackers to overwrite arbitrary files outside the project root. Attackers can supply absolute paths or relative paths containing directory traversal sequences to write malicious content to sensitive files like shell startup scripts or SSH configuration files.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-86541 since 09/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

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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