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One Quote Too Many: CVE-2026-17351 — How a Backslash Broke pgAdmin's AI Assistant Read-Only Guard (Twice)

On July 24, 2026, a security researcher going by Kai Aizen (SnailSploit) reported a bypass of a patch that was less than six weeks old. The patch, shipped in pgAdmin 4 v9.16 on June 18, was supposed to stop the AI Assistant from executing anything but read-only SQL. The bypass, …