Preliminary research

From SELECT to SYSADMIN with SQL Copilot (CVE-2026-65669)

Johann Rehberger · Embrace The Red · 30 September 2026

AI-collected research leads through 3 October 2026, including bounded month-by-month reviews of selected social and community sources from January through September. Unranked, incomplete, not community-vetted, and subject to change.

The article reverse engineers SQL Copilot's read-only checker and bypasses it with dynamic T-SQL, then stores AGENTS.md and CONSTITUTION.md instructions in SQL Server extended properties. A later privileged Copilot session consumes that metadata, turning database-owner control into sysadmin escalation.

Record

Researcher

Johann Rehberger

Published by

Embrace The Red

Date

30 September 2026

In the archive

• Collected in the 2026 preliminary research sweep

Related sources

• Slides
• System-prompt snapshot
• MSRC advisory

Tags

• prompt-injection
• access-control
• privilege-escalation
• mssql
• persistence
• ai-agent
• owasp-a01-2021
• owasp-a03-2021

This page is the archive's own catalogue record. The research is the work of Johann Rehberger, first published at the original source. Preserved copies are kept so the citation survives its host.