{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"mistralai/mistral-vibe","product":"mistral-vibe","source":"CNA: VulnCheck","vendor":"mistralai","versions":[{"lessThan":"2.25.5","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-109428","cwes":["CWE-436"],"description":"Mistral Vibe before 2.25.5 contains a permission validation bypass vulnerability that allows attackers to execute unauthorized commands by exploiting a parsing discrepancy between tree-sitter-bash and bash in handling backslash-newline line continuations in the _extract_commands() function of bash.py. Attackers can craft a command string where tree-sitter-bash extracts only an allowlisted prefix such as cd while bash joins the line continuation into a materially different and hidden command such as a curl request, causing resolve_permission to grant ALWAYS permission while bash executes unauthorized arbitrary commands.","epss":{"date":"2026-11-08","percentile":0.43719,"score":0.00509},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.8,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794146449343,"publishedAt":1791915425062,"references":[{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5"},{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/mistralai/mistral-vibe/pull/1111"},{"source":"CNA: VulnCheck","tags":["patch","issue-tracking"],"url":"https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/mistral-vibe-permission-bypass-via-bash-line-continuation"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/mistralai/mistral-vibe/pull/1111"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553"}],"revision":"2abd4a35a9a878e876a8b42a94ef9cfeba3849c9db1d7bedfc7f4fdfd484ca9b","sources":[{"modifiedAt":1794146449343,"name":"CNA: VulnCheck","retrievedAt":1794147015545,"url":"https://www.cve.org/CVERecord?id=CVE-2026-109428"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794150616461,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109428"}],"ssvc":{"assessedAt":1793042669486,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Mistral Vibe < 2.25.5 Permission Bypass via Bash Line Continuation","updatedAt":1794150616461}