DEBIAN-CVE-2026-50737

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Source
https://security-tracker.debian.org/tracker/CVE-2026-50737
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50737.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-50737
Upstream
  • CVE-2026-50737
Published
2026-07-28T19:17:36.827Z
Modified
2026-07-29T09:00:14.610132733Z
Severity
  • 9.0 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

When applying replicated changes for a row that is missing one or more columns, pglogical evaluates the affected table's default expressions on the subscriber. Because the apply worker runs at a privilege level equivalent to a PostgreSQL superuser in default installations, any function invoked by such a default expression also runs at that privilege. A party acting as the publisher can use this path to cause functions to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser. This is a second, independent path to the same superuser escalation tracked under CVE-2026-50736 (the pglogical queue issue). 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

Debian:11 / pglogical

Package

Name
pglogical
Purl
pkg:deb/debian/pglogical?arch=source&distro=bullseye

Affected ranges

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

Affected versions

2.*
2.3.3-3
2.3.3-3+deb11u1
2.3.3-4
2.4.0-1
2.4.0-2
2.4.1-1
2.4.2-1
2.4.2-2
2.4.2-3
2.4.3-1
2.4.3-2
2.4.4-1
2.4.4-2
2.4.4-3
2.4.5-1
2.4.6-1
2.4.6-2
2.4.7-1
2.4.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50737.json"

Debian:12 / pglogical

Package

Name
pglogical
Purl
pkg:deb/debian/pglogical?arch=source&distro=bookworm

Affected ranges

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

Affected versions

2.*
2.4.2-3
2.4.3-1
2.4.3-2
2.4.4-1
2.4.4-2
2.4.4-3
2.4.5-1
2.4.6-1
2.4.6-2
2.4.7-1
2.4.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50737.json"

Debian:13 / pglogical

Package

Name
pglogical
Purl
pkg:deb/debian/pglogical?arch=source&distro=trixie

Affected ranges

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

Affected versions

2.*
2.4.5-1
2.4.6-1
2.4.6-2
2.4.7-1
2.4.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50737.json"

Debian:14 / pglogical

Package

Name
pglogical
Purl
pkg:deb/debian/pglogical?arch=source&distro=forky

Affected ranges

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

Affected versions

2.*
2.4.5-1
2.4.6-1
2.4.6-2
2.4.7-1
2.4.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50737.json"