Description
When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.
Published: 2021-11-22
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2922-1 pgbouncer security update
Debian DLA Debian DLA DLA-4180-1 pgbouncer security update
EUVD EUVD EUVD-2021-27149 When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Subscriptions

Debian Debian Linux
Fedoraproject Fedora
Pgbouncer Pgbouncer
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published:

Updated: 2025-11-03T19:26:17.293Z

Reserved: 2021-11-08T00:00:00.000Z

Link: CVE-2021-3935

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-11-22T16:15:07.440

Modified: 2025-11-03T20:15:50.153

Link: CVE-2021-3935

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses