CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsing
7.5
HIGH
CVSS 3.1
EPSS 0.05%
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.
How to fix CVE-2026-6664
To remediate CVE-2026-6664, upgrade the affected package to a fixed version below.
- —upgrade to 1.25.2 or later
- —no fix listed
Is CVE-2026-6664 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.25.2
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |