CVE-2026-87986

10.0 criticalEPSS 0.6%

Critical (10.0). EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

10.0 critical

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)
CWE: CWE-228
Published: 2026-09-11
Modified: 2026-09-11
Record from: the NVD, synced 2026-10-19

References

https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe4

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