PgBouncer 1.26.0 has been released. This release fixes three CVEs:
- CVE-2026-19888: DoS due to crash, triggerable by unauthenticated clients. Caused by a SCRAM client-final-message without a nonce.
- CVE-2026-6668: DoS due to infinite loop, triggerable by unauthenticated clients. Caused by an integer overflow in the packet buffer growth logic.
- CVE-2026-6669: DoS due to unbounded work during login, triggerable by a malicious PostgreSQL server. Caused by an unbounded SCRAM iteration count.
It also tracks search_path and default_transaction_read_only by default, adds the pool_idle_timeout setting, allows query_wait_timeout to be set per user and database, adds meson build support, and removes the deprecated online restart (-R) functionality.
See the full details in the changelog.
Download here: pgbouncer-1.26.0.tar.gz (sha256)