UBUNTU-CVE-2026-50735

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Source
https://ubuntu.com/security/CVE-2026-50735
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-50735
Upstream
Published
2026-07-28T19:17:00Z
Modified
2026-08-26T12:15:04Z
Severity
  • 6.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

pglogical's apply worker does not sufficiently validate the length of certain fields in incoming replication protocol messages before copying them, resulting in an out-of-bounds read. A party acting as the publisher for a subscription, for example a non-PostgreSQL endpoint that speaks the pglogical replication protocol, can return crafted messages that cause the subscriber's apply worker to read beyond the bounds of an allocated buffer, disclosing adjacent process memory or crashing the worker. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.

References

Affected packages

Ubuntu:18.04:LTS / pglogical

Package

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

Affected ranges

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

Affected versions

2.*
2.0.0-1
2.1.0-1
2.1.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "postgresql-10-pglogical",
            "binary_version": "2.1.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json"

Ubuntu:20.04:LTS / pglogical

Package

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

Affected ranges

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

Affected versions

2.*
2.2.2-1
2.3.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "postgresql-12-pglogical",
            "binary_version": "2.3.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json"

Ubuntu:22.04:LTS / pglogical

Package

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

Affected ranges

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

Affected versions

2.*
2.3.3-3
2.4.0-2
2.4.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "postgresql-14-pglogical",
            "binary_version": "2.4.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json"

Ubuntu:24.04:LTS / pglogical

Package

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

Affected ranges

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

Affected versions

2.*
2.4.3-1ubuntu1
2.4.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "postgresql-16-pglogical",
            "binary_version": "2.4.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json"

Ubuntu:26.04:LTS / pglogical

Package

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

Affected ranges

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

Affected versions

2.*
2.4.5-1build1
2.4.6-1
2.4.6-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "postgresql-18-pglogical",
            "binary_version": "2.4.6-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50735.json"