83d0a083f1
numeric_combine() and several other state-combining functions for aggregates cheated for the case of both inputs being NULL: they returned a null pointer without bothering to mark it as a SQL NULL. This was harmless in the expected usage where the result would be passed to the same combine function or a related aggregate final function. But it's bad news from a security standpoint, because now that value can be passed to an internal-accepting function even if said function is strict. While a previous patch prevented such queries from being issued, it seems like good defense-in-depth to expend the few additional lines of code needed to do this properly. Comparable functions such as array_agg_combine() already do so. Reported-by: Amy Burnett (OpenAI Codex Security) Author: Tom Lane <tgl@sss.pgh.pa.us> Backpatch-through: 14 Security: CVE-2026-14680
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.