{"id":"CVE-2026-87986","title":"An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using shell constructs it's parser cannot interpret","summary":"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 comman…","severity":"critical","cvss":10,"cvssVector":"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","cwe":["CWE-228"],"vendor":"mistralai","product":"mistral-vibe","affected":["mistral-vibe >= 1.3.4 <= *"],"published":"2026-09-11","updated":"2026-09-11","sourceUpdated":"2026-09-11T17:35:21.440","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87986","references":[{"url":"https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe4","label":"6f8de1f0-f67e-45a6-b68f-98777fdb759c"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-11T14:53:56.024113Z"},"cvssSource":"cna","ingestedAt":"2026-09-11T16:45:47.862Z","epss":0.00438,"epssPercentile":0.37403,"slug":"CVE-2026-87986","body":"## Overview\n\nAn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":55,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}