CVE-2026-107350 PgBouncer - Authentication Bypass

PgBouncer 1.17.0 through 1.26.0 contains an authentication bypass caused by improper handling of SCRAM authentication messages, letting remote attackers log in as any user if they know a valid password, exploit requires knowledge of a valid user's password.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to a version later than 1.26.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs