Not scored yet
CVE-2026-87987
An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using environment variable assignments preceding allowlisted commands. These assignments are excluded from inspection, enabling attacker-controlled environment variables to cause arbitrary code execution without user approval.
What this means for your business
- FIRST's prediction model gives it a 0.3% chance of attack attempts being seen in the next 30 days, ranking above 26% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- Not yet scored
- CVSS v4
- 10.0
- Weakness
- CWE-15
- Assigned by
- 6f8de1f0-f67e-45a6-b68f-98777fdb759c
Dates
- Published
- 2026-09-11
- Last modified
- 2026-09-11
- Sources
- NVD