EricLBuehler Mistral.rs up to 0.9.3 handlers.rs calibration_apply save_cimatrix path traversal

Summaryinfo

A vulnerability described as critical has been identified in EricLBuehler Mistral.rs up to 0.9.3. The impacted element is the function calibration_apply of the file mistralrs-server-core/src/handlers.rs. Executing a manipulation of the argument save_cimatrix can lead to path traversal. The identification of this vulnerability is CVE-2026-108940. The attack may be launched remotely. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in EricLBuehler Mistral.rs up to 0.9.3. This vulnerability affects the function calibration_apply of the file mistralrs-server-core/src/handlers.rs. The manipulation of the argument save_cimatrix with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-108940. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1006.

It is declared as proof-of-concept.

Upgrading to version 0.9.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 8c81056712709b4845ec6d9531e4d35bab4a367c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• EricLBuehler

Name

• Mistral.rs

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3

License

• open-source

Website

• Product: https://github.com/EricLBuehler/mistral.rs/

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Submitinfo

Accepted

• Submit #997601: https://github.com/EricLBuehler/ mistral.rs v0.9.2 Unauthenticated arbitrary-path file write (by carfeii)

Once again VulDB remains the best source for vulnerability data.

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