CVE-2026-108759
mistral.rs 0.9.0 through 0.9.4 Sandbox Escape via Symlink Following in mistralrs-code-exec
- State
- Published
- Severity
- 7.6 High
- Published
- Oct 11, 2026
- Updated
- Oct 18, 2026
- Reserved
- Oct 11, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.6 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
mistral.rsEricLBuehler |
|
References
- https://hackmd.io/@haind03/ericlbuehler-mistralrs-code-exec-output-symlink-sandbox-escapethird-party-advisory
- https://github.com/EricLBuehler/mistral.rs/blob/4400935451da5e2dc7379a3f92fbbada66557f6c/mistralrs-code-exec/src/files.rs#L241-L254technical-description
- https://github.com/EricLBuehler/mistral.rs/blob/4400935451da5e2dc7379a3f92fbbada66557f6c/mistralrs-code-exec/src/mount.rs#L30-L50technical-description
- https://github.com/EricLBuehler/mistral.rsproduct
- VulnCheck Advisory: mistral.rs 0.9.0 through 0.9.4 Sandbox Escape via Symlink Following in mistralrs-code-execthird-party-advisory
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