CVE-2026-109429
Mistral Vibe before 2.25.4 contains a command permission gate bypass vulnerability that allows…
- Risk score
- 67/100
- CVSS
- 8.8 v3.1
- Exploit chance (30 days)
- 0.6%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 substit…
- Affected
- See advisory
- Fix
- Upgrade the product to 2.25.4 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.8 high
- Remotely exploitable without logging in
References
- https://github.com/mistralai/mistral-vibe/commit/19b5b74faa78d0816b8d4d4c7d7543fc3520678c
- https://github.com/mistralai/mistral-vibe/pull/1084
- https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.4
- https://www.vulncheck.com/advisories/mistral-vibe-bash-permission-bypass-via-var-p-prompt-transform
Original description
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.
Last activity 13 Oct 2026. Patch Forecast updates every hour.