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.

Subscriptions

Vendors Products
Debian Linux Subscribe
Fedoraproject Subscribe
Pgbouncer Subscribe
Pgbouncer Subscribe
Enterprise Linux Subscribe

Tracking

Sign in to view the affected projects.

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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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

Type Values Removed Values Added
References

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