Is CVE-2026-107349 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-107349?

CVE-2026-107349 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-107349

Description

An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as "-c=", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted.