Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-109429— Mistral Vibe < 2.25.4 Bash Permission Bypass via ${var@P} Prompt-Transform

Quick assessment

Affected
mistralai mistral-vibe
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Mistral Vibe 2.25.4 版本之前，存在一个命令权限绕过漏洞。攻击者可以通过在单引号变量值中隐藏命令替换来执行任意命令，而这种命令替换无法被 tree-sitter-bash 静态解析器检测到。攻击者可以构造输入，例如将命令替换嵌入单引号变量中，并使用 ${var@P} 提示符变换操作符重新展开它，从而触发 bash 的 promptvars 特性在运行时执行隐藏的命令。由于只有末尾的允许列出的命令被分类识别，这会导致以终端会话权限静默执行任意命令。

CVSS 8.8 · High EPSS 0.56% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
mistralai mistral-vibe < 2.25.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-109429

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Mistral Vibe < 2.25.4 Bash Permission Bypass via ${var@P} Prompt-Transform
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
mistralai mistral-vibe 0 ~ 2.25.4 -

II. Public POCs for CVE-2026-109429

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-109429

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-109429 (1)

Vendor Advisories for CVE-2026-109429 (1)

Other References for CVE-2026-109429 (1)

IV. Related Vulnerabilities

Same product: mistral-vibe
Same vendor: mistralai
Same weakness: CWE-436

V. Comments for CVE-2026-109429

No comments yet

Leave a comment