Bug 2552735 (CVE-2026-107349) - CVE-2026-107349 pgbouncer: pgbouncer: Denial of Service via empty parameter name in startup options
Summary: CVE-2026-107349 pgbouncer: pgbouncer: Denial of Service via empty parameter n...
Keywords:
Status: NEW
Alias: CVE-2026-107349
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2553066 2553067
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-14 17:52 UTC by OSIDB Bzimport
Modified: 2026-10-15 07:16 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-14 17:52:24 UTC 
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.
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