# PostgreSQL PgBouncer vulnerabilities

Source: https://junglewise.ai/threats/technologies/pgbouncer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/pgbouncer.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in PostgreSQL PgBouncer: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-6667, was published on 9 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 4 (0 critical, 0 exploited in the wild)

## About PostgreSQL PgBouncer

Lightweight connection pooler for PostgreSQL that manages client connections and database server resources.

## Latest PostgreSQL PgBouncer vulnerabilities

- [CVE-2026-6667: PgBouncer missing authorization for KILL_CLIENT admin command](https://junglewise.ai/threats/cve-2026-6667-pgbouncer-missing-authorization-for-kill-client-admin-command) (medium, CVSS 4.3, published 9 May 2026)
- [CVE-2026-6666: PgBouncer null pointer dereference via malformed server error response](https://junglewise.ai/threats/cve-2026-6666-pgbouncer-null-pointer-dereference-via-malformed-server-error) (medium, CVSS 5.9, published 9 May 2026)
- [CVE-2026-6665: PgBouncer stack overflow in SCRAM authentication](https://junglewise.ai/threats/cve-2026-6665-pgbouncer-stack-overflow-in-scram-authentication) (high, CVSS 8.1, published 9 May 2026)
- [CVE-2026-6664: PgBouncer integer overflow in SCRAM packet parsing](https://junglewise.ai/threats/cve-2026-6664-pgbouncer-integer-overflow-in-scram-packet-parsing) (high, CVSS 7.5, published 9 May 2026)

## Most severe PostgreSQL PgBouncer vulnerabilities

- [CVE-2026-6665: PgBouncer stack overflow in SCRAM authentication](https://junglewise.ai/threats/cve-2026-6665-pgbouncer-stack-overflow-in-scram-authentication) (high, CVSS 8.1, published 9 May 2026)
- [CVE-2026-6664: PgBouncer integer overflow in SCRAM packet parsing](https://junglewise.ai/threats/cve-2026-6664-pgbouncer-integer-overflow-in-scram-packet-parsing) (high, CVSS 7.5, published 9 May 2026)
- [CVE-2026-6666: PgBouncer null pointer dereference via malformed server error response](https://junglewise.ai/threats/cve-2026-6666-pgbouncer-null-pointer-dereference-via-malformed-server-error) (medium, CVSS 5.9, published 9 May 2026)
- [CVE-2026-6667: PgBouncer missing authorization for KILL_CLIENT admin command](https://junglewise.ai/threats/cve-2026-6667-pgbouncer-missing-authorization-for-kill-client-admin-command) (medium, CVSS 4.3, published 9 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other PostgreSQL technologies

- [PostgreSQL](https://junglewise.ai/threats/technologies/postgresql): 64 vulnerabilities
- [PostgreSQL pgAdmin 4](https://junglewise.ai/threats/technologies/pgadmin-4): 26 vulnerabilities
- [PostgreSQL psqlODBC](https://junglewise.ai/threats/technologies/postgresql-psqlodbc): 10 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "PostgreSQL PgBouncer vulnerabilities", https://junglewise.ai/threats/technologies/pgbouncer, 13 November 2026.