CVE-2026-116308 PostgreSQL dict_int reads beyond zero-length tokens

This vulnerability is rated as Moderate because exploitation requires an authenticated database connection and the non-default dict_int extension to be installed in the target database. Under standard Red Hat enterprise deployments, this dictionary extension is not enabled by default, significantly limiting the exposure of typical installations. When the extension is present, an authenticated attacker can read adjacent server memory contents, but cannot modify database records or achieve arbitrary code execution.

Remove the optional dict_int extension from databases where it is not strictly required, or restrict database access to prevent untrusted users from querying dictionaries that rely on this module.

To remove the extension from a specific database, execute the following SQL command as a superuser or database owner:

DROP EXTENSION IF EXISTS dict_int CASCADE;

Caveats: Dropping this extension removes any dependent full-text search configurations and will cause queries relying on dict_int to fail. Verify whether application schemas utilize this dictionary template prior to removal.

Service impact: Executing this command takes effect immediately within the database; restarting or reloading the PostgreSQL service is not required.