High severity8.8NVD Advisory· Published Oct 14, 2026
CVE-2026-107350
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.
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Affected products
1Patches
Vulnerability mechanics
References
1News mentions
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