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.
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Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-09. NVD baseline CVSS 7.5; sources differ by 0.0.
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.
May 9, 2026
May 14, 2026
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msrc
CWE-190