Vulnerability · Published Sep 11, 2026 · Assigned by HiddenLayer
CVE-2026-87986
Critical 10.0
In plain English
A critical-severity security flaw in mistral-vibe from mistralai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 4.0)10.0Critical
Exploit odds (30 days)0.6%top 53.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using shell constructs it's parser cannot interpret. Unparsed portions are omitted from inspection, enabling embedded commands to execute on the user's system without approval.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mistralai | mistral-vibe | 1.3.4 – through * |
Weakness: CWE-228 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H