CVE-2026-108940

6.5Medium

Published 13 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash

6.5Medium

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Impact: Limited impact
Weakness: CWE-22

Impact

Remote, unauthenticated attackers can write files outside intended directories to cause data tampering or denial of service on the server. They only need network access to the API.

Root cause

The calibration_apply handler fails to sanitize the save_cimatrix parameter, allowing directory traversal sequences in the file path.

Affected systems

Mistral.rs up to and including 0.9.3

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Fix & remediation

Upgrade to Mistral.rs version 0.9.4 or apply commit 8c81056712709b4845ec6d9531e4d35bab4a367c; no interim configuration workaround is documented, so restrict network access to the server if upgrading must wait.

shell

$ cargo install mistralrs-server --version 0.9.4 --locked

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

A vulnerability was found in EricLBuehler Mistral.rs up to 0.9.3. The affected element is the function calibration_apply of the file mistralrs-server-core/src/handlers.rs. Performing a manipulation of the argument save_cimatrix results in path traversal. The attack may be initiated remotely. The exploit has been made public and could be used. Upgrading to version 0.9.4 is sufficient to fix this issue. The patch is named 8c81056712709b4845ec6d9531e4d35bab4a367c. It is suggested to upgrade the affected component.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-108940