VDB
CVE-2026-87984
CVE-2026-87984
PUBLISHED
CVSS 9.3 CRITICAL
Reported by HiddenLayer · Published September 11, 2026
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.
Risk Scores
CVSS 4.0
9.3
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
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| mistralai | mistral-vibe | 1.3.4 |
| mistralai | mistral-vibe | 1.3.4 |
Timeline
- Sep 11, 2026 CVE Published
- Sep 11, 2026 CVE Updated
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score