# CVE-2026-108759: mistral.rs symlink following vulnerability in code-exec

Source: https://junglewise.ai/threats/cve-2026-108759-mistral-rs-0-9-0-through-0-9-4-contains-a-link-following  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-11. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108759 · Severity: medium · CVSS 6.8 · Published 2026-10-11

mistral.rs is an inference server for large language models that can execute code in a sandboxed environment. A vulnerability in the code execution component allows attackers or prompt-injected agents to read and overwrite files outside the sandbox by creating symlinks, potentially accessing sensitive data with the server's permissions.

Technologies: [EricLBuehler Mistral.Rs](https://junglewise.ai/threats/technologies/mistral-rs). Vendors: [EricLBuehler](https://junglewise.ai/threats/vendors/ericlbuehler).

## Quick answers

**Is CVE-2026-108759 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108759 being exploited in the wild.

**How severe is CVE-2026-108759?** Medium severity, with a CVSS score of 6.8, published 11 October 2026.

**Which products and versions are affected?** EricLBuehler Mistral.Rs 0.9.0 through 0.9.4.

**Is there a fix for CVE-2026-108759?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108759 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-108759?** Check whether you run EricLBuehler Mistral.Rs at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The mistralrs-code-exec component fails to validate symlinks when handling file I/O, allowing sandboxed code to bypass directory restrictions via symlink traversal. Attackers can exploit this through prompt injection or session reuse with symlinked input paths to read or modify files outside the intended sandbox directory with the server process's privileges.

## Affected products

- EricLBuehler mistral.rs 0.9.0 through 0.9.4

## Timeline

- 2026-10-11: disclosed

## References

- [https://github.com/EricLBuehler/mistral.rs](https://github.com/EricLBuehler/mistral.rs)
- [https://github.com/EricLBuehler/mistral.rs/blob/4400935451da5e2dc7379a3f92fbbada66557f6c/mistralrs-code-exec/src/files.rs](https://github.com/EricLBuehler/mistral.rs/blob/4400935451da5e2dc7379a3f92fbbada66557f6c/mistralrs-code-exec/src/files.rs)

## Related threats

- [EricLBuehler Mistral.rs path traversal in calibration_apply](https://junglewise.ai/threats/cve-2026-108940-a-vulnerability-was-found-in-ericlbuehler-mistral-rs-up-to-0-9-3)
- [EricLBuehler mistral.rs server-side request forgery in is_global_ip](https://junglewise.ai/threats/cve-2026-108939-a-vulnerability-has-been-found-in-ericlbuehler-mistral-rs-up-to)
- [mistral.rs unbounded media fetch and video frame extraction DoS](https://junglewise.ai/threats/mistral-rs-unbounded-media-fetch-and-video-frame-extraction-dos-9ec59bbb)
- [mistral.rs media loader SSRF and arbitrary file read via image_url](https://junglewise.ai/threats/mistral-rs-media-loader-ssrf-and-arbitrary-file-read-via-image-url-669bc2df)