Is CVE-2026-107350 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-107350?

CVE-2026-107350 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-107350

Description

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.