CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-3935
High (8.1). EPSS 1.1% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 66% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-295, CWE-89
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- pgbouncer:pgbouncer
- redhat:enterprise_linux
References
- http://www.pgbouncer.org/changelog.html#pgbouncer-116x
- https://bugzilla.redhat.com/show_bug.cgi?id=2021251
- https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/
- http://www.pgbouncer.org/changelog.html#pgbouncer-116x