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CVE-2026-6666

HighPublished

PgBouncer crash in kill_pool_logins_server_error

Published: May 9, 2026
Updated: May 11, 2026
Assigning CNA: PostgreSQL
Evidence observed: Aug 10, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 30.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-6666-XPC-Service-NSKeyedUnarchiver-Deserialization-Attack-macOS-iOS-simulation-Exploit
Simulated macOS/iOS XPC service vulnerable to NSKeyedUnarchiver deserialization, plus exploit demonstration and crafted plist payload for RCE via insecure deserialization.

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