CVE-2026-108759
Received Received - Intake

Symlink-Based File Read/Write in mistral.rs

Publication date: 2026-10-11

Last updated on: 2026-10-11

Assigner: VulnCheck

Description
mistral.rs 0.9.0 through 0.9.4 contains a link following vulnerability in mistralrs-code-exec that allows sandboxed shell code to read and overwrite files outside the sandbox via symlinks. Attackers or prompt-injected agents can name symlinks as outputs or reuse sessions with symlinked input paths to access files with the server process's permissions.

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Meta Information

Published
2026-10-11
Last Modified
2026-10-11
Generated
2026-10-11
AI Q&A
2026-10-11
EPSS Evaluated
N/A
NVD
CVE-2026-108759
EUVD
EUVD-2026-96924

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
EricLBuehler mistral.rs 0.9.0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-59 The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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Executive Summary

This vulnerability affects mistral.rs versions 0.9.0 through 0.9.4. It involves a sandbox escape in the mistralrs-code-exec component where symlink following allows sandboxed shell code to read or overwrite files outside the sandbox. Attackers can manipulate symlinks to access files with the server process's permissions, bypassing intended restrictions.

Detection Guidance

Check for mistral.rs versions 0.9.0 through 0.9.4. Inspect file operations in mistralrs-code-exec for symlink handling. Monitor for unexpected file reads or writes outside sandbox directories.

Impact Analysis

If exploited, this vulnerability could allow attackers to access sensitive files on the server running mistral.rs. This includes reading confidential data or overwriting critical files, potentially leading to data breaches, system compromise, or unauthorized modifications to server configurations.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR's data protection requirements and HIPAA's privacy rules. Organizations using affected versions may face compliance violations, legal penalties, and reputational damage due to potential data exposure.

Mitigation Strategies

Upgrade mistral.rs to a patched version beyond 0.9.4. Disable mistralrs-code-exec if not required. Implement strict input/output path validation to prevent symlink traversal.

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