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7.5 High

CVE-2026-6664 An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead…

Description

An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet.

Affected products and versions

Product Affected versions Fixed in
pgbouncer 1.25 earliest → < 1.25.2 1.25.2

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-2026-107349 An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of… 7.5 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
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