{"id":"CVE-2026-109428","revision":null,"records":[{"revision":"27e38dcddfcf413a96153a7e8053ac10","observedAt":"2026-10-26T20:35:31.018+00:00","statement":{"source":"cve-program","id":"CVE-2026-109428","aliases":[],"title":"Mistral Vibe < 2.25.5 Permission Bypass via Bash Line Continuation","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.","state":0,"publishedAt":"2026-10-13T18:17:05.062+00:00","modifiedAt":"2026-10-26T19:25:04.692+00:00","affected":[{"ecosystem":"Vendor product","name":"mistral-vibe","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"mistralai\",\n                    \"product\": \"mistral-vibe\",\n                    \"packageURL\": \"pkg:github/mistralai/mistral-vibe\",\n                    \"repo\": \"https://github.com/mistralai/mistral-vibe\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.25.5\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5","https://github.com/mistralai/mistral-vibe/pull/1111","https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553","https://www.vulncheck.com/advisories/mistral-vibe-permission-bypass-via-bash-line-continuation"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109428","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109428","identifiers":["CVE-2026-109428"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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