GHSA-j88v-2chj-qfwx

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GHSA-j88v-2chj-qfwx

Summary: pgx: SQL Injection via placeholder confusion with dollar quoted string literals

Details: ### Impact SQL Injection can occur when: 1. The non-default simple protocol is used. 2. A dollar quoted string literal is used in the SQL query. 3. That string literal contains text that would be would be interpreted as a placeholder outside of a string literal. 4. The value of that placeholder is controllable by the attacker. e.g. ```go attackValue := `$tag$; drop table canary; --` _, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue) ``` This is unlikely to occur outside of a contrived scenario. ### Patches The problem is resolved in v5.9.2. ### Workarounds Do not use the simple protocol to execute queries matching all the above conditions.

References: https://github.com/jackc/pgx/security/advisories/GHSA-j88v-2chj-qfwx, https://nvd.nist.gov/vuln/detail/CVE-2026-41889, https://github.com/jackc/pgx/commit/60644f84918a8af66d14a4b0d865d4edafd955da, https://github.com/jackc/pgx, https://github.com/jackc/pgx/releases/tag/v5.9.2