UBUNTU-CVE-2026-107350

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Source
https://ubuntu.com/security/CVE-2026-107350
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-107350
Upstream
  • CVE-2026-107350
Published
2026-10-15T00:00:00Z
Modified
2026-10-17T12:58:44Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.5.5-1
1.6.1-1
1.7-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:18.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.7.2-3build1
1.7.2-65-g2b8e6cf-1
1.8.1-1
1.8.1-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.8.1-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:20.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.10.0-1
1.10.0-1build1
1.11.0-1
1.12.0-2
1.12.0-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.12.0-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:22.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.15.0-1
1.16.1-1ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.16.1-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:24.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.20.0-1
1.21.0-1
1.22.0-1
1.22.0-1build1
1.22.0-1build3
1.22.0-1build4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.22.0-1build4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:26.04:LTS
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.24.1-1
1.25.0-2
1.25.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.25.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"
Ubuntu:26.10
pgbouncer

Package

Name
pgbouncer
Purl
pkg:deb/ubuntu/pgbouncer?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.25.1-1
1.25.2-1
1.25.2-1ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "pgbouncer",
            "binary_version":  "1.25.2-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107350.json"