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CVE-2026-6666

PgBouncer crash in kill_pool_logins_server_error

HIGH
7.5
CVSS Score
Published: May 9, 2026 at 12:43 AM UTC
Updated: July 24, 2026 at 08:23 AM UTC
1 product affected across 1 vendorPgbouncer

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A possible null pointer reference in PgBouncer before 1.25.2 could lead to a crash, if a server sends an error response without SQLSTATE field.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Pgbouncer· Pgbouncer
95%
v < 1.25.2
Affected range stops below 1.25.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Release Notes
Source: cverecord
https://www.pgbouncer.org/changelog.html#pgbouncer-125x

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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