CVE-2026-107348 Affecting pgbouncer package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-PGBOUNCER-20969817
  • published15 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-107348  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest pgbouncer.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pgbouncer package and not the pgbouncer package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.

CVSS Base Scores

version 3.1