CVE-2026-109429 (GCVE-0-2026-109429)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:22 – Updated: 2026-10-13 18:22 X_Open Source
VLAI
EPSS
VEX
Title
Mistral Vibe < 2.25.4 Bash Permission Bypass via ${var@P} Prompt-Transform
Summary
Mistral Vibe before 2.25.4 contains a command permission gate bypass vulnerability that allows attackers to execute arbitrary commands by hiding a command substitution inside a single-quoted variable value that tree-sitter-bash static parsing cannot detect. Attackers can craft input such as embedding a command substitution within a single-quoted variable and re-expanding it with the ${var@P} prompt-transform operator so bash's promptvars feature executes the hidden command at runtime while only the trailing allowlisted command is classified, resulting in silent arbitrary command execution with the privileges of the agent's terminal session.
Severity
CWE
- CWE-436 - Interpretation Conflict
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/mistralai/mistral-vibe/release… | release-notespatch |
| https://github.com/mistralai/mistral-vibe/pull/1084 | issue-trackingpatch |
| https://github.com/mistralai/mistral-vibe/commit/… | patchissue-tracking |
| https://www.vulncheck.com/advisories/mistral-vibe… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| mistralai | mistral-vibe |
Affected:
0 , < 2.25.4
(semver)
|
guessed |
Date Public
2026-09-12 00:00
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}
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},
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"dateReserved": "2026-10-12T15:52:36.682Z",
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}
],
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"lastModified": "2026-10-13T19:30:29.797",
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}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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