CVE-2026-107349 — Infinite loop on empty option name in startup options parameter in PgBouncer

CVE-2026-107349

Infinite loop on empty option name in startup options parameter in PgBouncer PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
n/a / PgBouncer	affected 1.20.0 before 1.26.1

CWE

CWE-835, CWE-400

References

https://www.pgbouncer.org/changelog.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.