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CVE-2026-50737: Enterprisedb Pglogical Security Vulnerability (CVSS 9)

CVE-2026-50737 is a critical severity security vulnerability in Enterprisedb Pglogical with a CVSS score of 9. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Last updated: Aug 24, 2026

Quick answer

Direct answer

CVE-2026-50737 is a critical severity security vulnerability in Enterprisedb Pglogical with a CVSS score of 9. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Risk scores

CVSS base score
9CRITICAL
EPSS probability
0.40%
Higher than 32 percent of all CVEs
CISA KEV
Not listed
CVSS metricWhat it means
Attack vector (AV:N)Network: reachable remotely
Attack complexity (AC:H)High complexity
Attack requirements (AT:P)Attack requirements present
Privileges required (PR:L)Low privileges required
User interaction (UI:N)No user interaction
Confidentiality (VC:H)High confidentiality impact
Integrity (VI:H)High integrity impact
Availability (VA:H)High availability impact

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

About Enterprisedb Pglogical

CVE-2026-50737 affects Enterprisedb Pglogical, a product from Enterprisedb. Before acting, confirm where Enterprisedb Pglogical runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.

What the flaw is

In plain terms: 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.

Based on its CVSS vector, the flaw can be reached over the network, needs some level of access, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Affected versions and timeline

FieldDetail
ProductEnterprisedb Pglogical
Affected versionsPglogical from 2.0.0 before 2.4.8
PublishedJul 28, 2026
Last modifiedAug 24, 2026
Added to CISA KEVNot listed
Assigning CNA20be33e2-bf35-4d13-8fad-18bd2f3e3659

How to detect it

  • Inventory every instance of Enterprisedb Pglogical and record the running version against the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
  • Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.

How to fix it

  • Apply the fixed version of Enterprisedb Pglogical named in the vendor advisory.
  • If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
  • Rescan after the change to prove the exposure is gone, then close the ticket.

CTEM action plan

CTEM stageWhat to do for this CVE
ScopeAdd every business service that depends on Enterprisedb Pglogical to the current CTEM cycle.
DiscoverFind all instances, including shadow and cloud deployments, and record versions and exposure.
PrioritizeRank using EPSS and CVSS together with asset exposure and business impact.
ValidateConfirm the flaw is reachable and exploitable in your environment and that compensating controls work.
MobilizeAssign the fix to the asset owner with a due date matched to the priority, then verify closure.

CWE References

Technical References

Frequently asked questions

CVE-2026-50737 is a critical severity security vulnerability in Enterprisedb Pglogical with a CVSS score of 9. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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