Improper Enforcement of Behavioral Workflow Affecting pgbouncer package, versions <0:1.26.1-1.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.37% (31st percentile)

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  • Snyk IDSNYK-RHEL10-PGBOUNCER-20983857
  • published16 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-107350  (opens in a new tab)
CWE-841  (opens in a new tab)

How to fix?

Upgrade RHEL:10 pgbouncer to version 0:1.26.1-1.hum1 or higher.
This issue was patched in RHSA-2026:83843.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pgbouncer package and not the pgbouncer package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user listed in auth_file to log in as any other user that authenticates using SCRAM, including PgBouncer admin users and backend superusers. A second StartupMessage sent during SCRAM authentication against a non-existent database is not rejected and switches the user being logged in as, while the SCRAM exchange is still verified against the keys of the first user.

CVSS Base Scores

version 3.1