Skip to content
fr Sign in
7.5 High

CVE-2026-107349 An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of…

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.

Affected products and versions

Product Affected versions Fixed in
pgbouncer 1.20 1.20.0 → < 1.26.1 1.26.1

References

Timeline

  1. Published
  2. Last modified

Other CVEs of pgbouncer

The 13 CVEs of pgbouncer →
CVE-2026-107350 Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user… 8.8 High CVE-2026-107348 Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a… 5.9 Medium CVE-2026-19888 Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2… 7.5 High CVE-2026-6668 Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker… 7.5 High
Track this CVE