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Path Traversal via Symlink Following in allowedLocalRoots in MCP Toolbox for Databases

Type: advisorySource: Official CVE List1 source record

Improper link resolution (CWE-59 / CWE-22) in the allowedLocalRoots path validation in Google MCP Toolbox for Databases versions 1.2.0 through 1.9.0 allows a remote authenticated attacker with tool execution permissions to bypass directory boundary restrictions via symbolic links. Because path validation checks directories lexically without resolving symbolic links first, an attacker can access or overwrite arbitrary local files located outside the permitted root directories.

Announced Source revision 1
Original source ↗

CVE-2026-102242

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-102242

MCP Toolbox for Databases

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://github.com/googleapis/mcp-toolbox",
    "vendor": "Google",
    "product": "MCP Toolbox for Databases",
    "versions": [
      {
        "status": "affected",
        "version": "1.2.0",
        "versionType": "semver",
        "lessThanOrEqual": "1.9.0"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-102242

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#3914 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement