Description
PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command. All users with access to the administration console (which itself requires authorization) could run this command. It would have been correct to allow only users listed in the admin_users parameter.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | PgBouncer | < 1.25.2 | 1.25.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pgbouncer | 1.25.2-1 | — |
| Debian 13 | pgbouncer | 1.24.1-1+deb13u2 | — |
| Debian 12 | pgbouncer | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | pgbouncer | No fix yet | — |
| Ubuntu 26.04 LTS | pgbouncer | No fix yet | — |
| Ubuntu 25.10 | pgbouncer | No fix yet | — |
| Ubuntu 24.04 LTS | pgbouncer | No fix yet | — |
| Ubuntu 22.04 LTS | pgbouncer | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | pgbouncer | No fix yet | — |
| Ubuntu 18.04 LTS | pgbouncer | No fix yet | — |
| Ubuntu 16.04 LTS | pgbouncer | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | pgbouncer | 1.25.2-1 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | pgbouncer | 1.25.1-r1 | — |
Advisories 1
- WID-SEC-2026-1445 PgBouncer: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 12, 2026