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Back to active CVEs
Critical · CVSS 9.3CVE-2026-93328

Missing Authorization in MCP Toolbox for Databases allows Arbitrary File Read and WriteCVE-2026-93328

Answer in brief

CVE-2026-93328 records a Critical severity (CVSS 9.3) vulnerability in Missing Authorization in MCP Toolbox for Databases allows Arbitrary File Read and Write. The current sources do not mark it as known exploited. The current feed maps Google Cloud/MCP Toolbox for Databases (googleapis/mcp-toolbox) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 26, 2026Updated Oct 26, 2026Source checked Oct 26, 2026First seen by HOL Oct 26, 2026Material review Oct 26, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Google Cloud/MCP Toolbox for Databases (googleapis/mcp-toolbox) (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Google Cloud/MCP Toolbox for Databases (googleapis/mcp-toolbox)generic>=1.2.0 <1.5.01.5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Google Cloud/MCP Toolbox for Databases (googleapis/mcp-toolbox).
  2. 2Review the reported fix. Source-reported solution: Upgrade googleapis/mcp-toolbox to version 1.5.0 or later. Configure the security boundaries introduced in v1.5.0 by setting allowedLocalRoots to restrict host file system interactions strictly to designated, isolated directories set allowedBuckets to ensure the tool only reads from and writes to explicit, authorized Google Cloud Storage buckets. Follow the Principle of Least Privilege by running the Toolbox service under an unprivileged OS user account and restricting associated Google Cloud IAM permissions.

Evidence timeline and material changes

  1. Published upstream

    Oct 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 26, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

Path Traversal and Missing Authorization in cloud-storage source in Google Cloud MCP Toolbox for Databases (googleapis/mcp-toolbox) versions 1.2.0 through 1.4.0 allows an unauthenticated remote attacker to exfiltrate host files to external Google Cloud Storage buckets and overwrite arbitrary local files via crafted tool invocation parameters.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache SIS: CWE-22: improper limitation of paths to GML, GeoTIFF, NADCON or NTv2 filesAlso CWE-22

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862, CWE-22
Source
CVE List V5
Source checked
Oct 26, 2026
References
1 linked source
Open source record