CVE-2026-17351 pgAdmin 4: AI Assistant read-only transaction bypass via sqlparse/PostgreSQL lexer disagreement (incomplete fix for CVE-2026-12045)

The fix for CVE-2026-12045 in pgAdmin 4 9.16 required the LLM-supplied query passed to the AI Assistant's executesqlquery tool to parse, via sqlparse, as exactly one non-transaction-control statement before running it inside a BEGIN TRANSACTION READ ONLY wrapper. sqlparse's string-literal lexing...

CVE-2026-17351 pgAdmin 4: AI Assistant read-only transaction bypass via sqlparse/PostgreSQL lexer disagreement (incomplete fix for CVE-2026-12045)

The fix for CVE-2026-12045 in pgAdmin 4 9.16 required the LLM-supplied query passed to the AI Assistant's executesqlquery tool to parse, via sqlparse, as exactly one non-transaction-control statement before running it inside a BEGIN TRANSACTION READ ONLY wrapper. sqlparse's string-literal lexing...

CVE-2026-17351

The CVE-2026-17351 issue affects pgAdmin 4 (versions from 9.13 up to, but not including, 9.17). The vulnerability stems from a mismatch between sqlparse’s string-literal handling and PostgreSQL’s parser, which can allow an LLM-supplied query executed inside a BEGIN TRANSACTION READ ONLY wrapper t...

pgAdmin 9.x < 9.16 Read-Only Transaction Bypass (CVE-2026-12045)

The version of pgAdmin installed on the remote host is 9.x prior to 9.16. It is, therefore, affected by a read-only transaction bypass vulnerability: - The AI Assistant's executesqlquery tool accepts multi-statement payloads. A single COMMIT followed by a write-statement terminates the enclosing...