{"id":"CVE-2026-109428","summary":"Mistral Vibe \u003c 2.25.5 Permission Bypass via Bash Line Continuation","details":"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.","modified":"2026-10-14T02:47:52.703753922Z","published":"2026-10-13T18:17:05.062Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-436"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109428.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109428.json"},{"type":"PACKAGE","url":"https://github.com/mistralai/mistral-vibe"},{"type":"FIX","url":"https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553"},{"type":"FIX","url":"https://github.com/mistralai/mistral-vibe/pull/1111"},{"type":"ADVISORY","url":"https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109428"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/mistral-vibe-permission-bypass-via-bash-line-continuation"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mistralai/mistral-vibe","events":[{"introduced":"0"},{"fixed":"c069ffa1e12fb5f2487b489217c40ab97721d553"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.25.5"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.25.3","v2.25.4","v2.25.2","v2.25.1","v2.25.0","v2.24.5","v2.24.4","v2.24.3","v2.24.2","v2.24.1","v2.24.0","v2.23.3","v2.23.2","v2.23.1","v2.23.0","v2.22.0","v2.21.0","v2.20.0","v2.19.1","v2.19.0","v2.18.4","v2.18.3","v2.18.2","v2.18.1","v2.18.0","v2.17.1","v2.17.0","v2.16.1","v2.16.0","v2.15.0","v2.14.1","v2.14.0","v2.13.0","v2.12.1","v2.11.1","v2.11.0","v2.10.1","v2.10.0","v2.9.6","v2.9.5","v2.9.4","v2.9.3","v2.9.2","v2.9.1","v2.9.0","v2.8.1","v2.8.0","v2.7.6","v2.7.5","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.2","v2.6.1","v2.6.0","v2.5.0","v2.4.2","v2.4.1","v2.4.0","v2.3.0","v2.2.1","v2.2.0","v2.1.0","v2.0.2","v2.0.1","v2.0.0","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.2","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109428.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}