Bug 2468429 (CVE-2026-6666)

Summary: CVE-2026-6666 PgBouncer: PgBouncer: Denial of Service via malicious server error response
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in PgBouncer. A remote attacker could exploit a null pointer reference vulnerability by sending a specially crafted error response without a SQLSTATE field. This could lead to a crash of the PgBouncer instance, resulting in a Denial of Service (DoS) for affected services.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2477907, 2477908    
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Description OSIDB Bzimport 2026-05-09 02:01:18 UTC
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.