{"schemaVersion":3,"id":"CVE-2026-6637","aliases":["ALPINE-CVE-2026-6637","RHSA-2026:50119","RHSA-2026:50811","UBUNTU-CVE-2026-6637","DEBIAN-CVE-2026-6637"],"status":"published","duplicateOf":null,"title":null,"description":"Stack buffer overflow in PostgreSQL module \"refint\" allows an unprivileged database user to execute arbitrary code as the operating system user running the database.  A distinct attack is possible if the application declares a user-controlled column as a \"refint\" cascade primary key and facilitates user-controlled updates to that column.  In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update.  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