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CVE-2026-87984

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.

Mistral Vibe 中存在一个任意文件写入漏洞，该漏洞首次出现在 1.3.4 版本中，使得攻击者能够在未经用户确认的情况下，在活动工作区之外创建或覆盖文件。由于 shell 重定向的目标路径未被包含在权限检查范围内，原本被允许的命令（即“允许列表”中的命令）得以将内容写入 Vibe 进程可访问的任意路径。

CVSS 9.3 · Critical
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I. Basic Information for CVE-2026-87984

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An arbitrary file write vulnerability in Mistral Vibe, introduced in version 1.3.4, allows an attacker to create or overwrite files outside the active workspace without user approval. Shell redirection destinations are omitted from permission checks, enabling otherwise allowlisted commands to write to arbitrary paths accessible to the Vibe process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
mistralai mistral-vibe 1.3.4 ~ * -

II. Public POCs for CVE-2026-87984

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III. Intelligence Information for CVE-2026-87984

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Vendor Advisories for CVE-2026-87984 (1)

Same Patch Batch · mistralai · 2026-09-11 · 6 CVEs total

CVE-2026-87987 10.0 CRITICAL Mistral Vibe：环境变量赋值绕过检查导致任意代码执行
CVE-2026-87985 10.0 CRITICAL Mistral Vibe 任意代码执行漏洞
CVE-2026-87988 10.0 CRITICAL Mistral Vibe 任意文件访问漏洞
CVE-2026-87986 10.0 CRITICAL Mistral Vibe 解析缺陷致任意代码执行漏洞
CVE-2026-87983 9.2 CRITICAL Mistral Vibe 2.6.0 任意文件读取漏洞

IV. Related Vulnerabilities

Same product: mistral-vibe
Same vendor: mistralai
Same weakness: CWE-22

V. Comments for CVE-2026-87984

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