{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.25.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c069ffa1e12fb5f2487b489217c40ab97721d553"
            }
          ],
          "repo": "https://github.com/mistralai/mistral-vibe",
          "type": "GIT"
        }
      ]
    }
  ],
  "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"
  },
  "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.",
  "id": "CVE-2026-109428",
  "modified": "2026-10-15T02:31:01.017709527Z",
  "published": "2026-10-13T18:17:05.062Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109428.json"
    },
    {
      "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"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mistralai/mistral-vibe/pull/1111"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mistralai/mistral-vibe"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mistral Vibe \u003c 2.25.5 Permission Bypass via Bash Line Continuation"
}