high severityConfidence mediumHistorical record

AWS postgres MCP read-only denylist missed set_config()

AWS Labs postgres MCP read-only SQL denylist missed set_config(). Upgrade to the patched release.

Also tracked as CVE-2026-85787

First observed

Sep 4, 2026

Last observed

Sep 4, 2026

Last reviewed

Sep 20, 2026

Tracking ended

Sep 4, 2026

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Uncertainty and limitations

Read the evidence limits before acting on this record.

Confirm exact fixed version against the live advisory.

  • Campaign tracks CVE-2026-85787 only.
  • Does not invent CVSS or fixed versions beyond cited sources.
  • HOL blog is operator guidance.

Timeline

Reviewed events, oldest first, each tied to a verified source.

  1. Disclosure

    CVE-2026-85787 AWS postgres MCP denylist bypass disclosed.

  2. Update

    HOL Guard published operator coverage.

Publication clock: 403.1 hours from reviewed disclosure timestamp to HOL publication; 24-hour high target; historical backfill outside target.

Guard coverage and non-coverage

What Guard's reviewed coverage assertions do and do not claim for this campaign.

No Guard coverage mapping is published for this record.

Defensive policy guidance

Reviewed starting points for defending against this campaign's artifact classes.

No campaign-specific policy guidance is published.

Sources

Every claim on this record is traceable to the sources below.

Reviewed in full by HOL Guard Security Publishing.

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Record HGTC-2026-7E8F30DB.