Vulnerability DatabaseCVE-2026-6664
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CVE-2026-6664
Published:May 09, 2026
Updated:May 16, 2026
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 Packages
https://github.com/pgbouncer/pgbouncer.git (GITHUB):
Affected version(s) >=pgbouncer_1_0 <pgbouncer_1_25_2
Fix Suggestion:
Update to version pgbouncer_1_25_2
Related Resources (1)
https://www.pgbouncer.org/changelog.html#pgbouncer-125x
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Integer Overflow or Wraparound
CWE-190
EPSS
Base Score:
0.05