CVE-2026-50737 (GCVE-0-2026-50737)

Vulnerability from cvelistv5 – Published: 2026-07-28 17:55 – Updated: 2026-07-28 18:52
VLAI
Summary
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.
Severity
9 (Critical)
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 18:48 UTC
CWE
  • CWE-250 - Execution with Unnecessary Privileges
Assigner
EDB CNA under the mitre root
CNA scorecard – unranked: 6 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
EnterpriseDB pglogical Affected: 2 , < 2.4.8 (semver)
guessed Create a notification for this product.
Credits
Mehmet Ince (@mdisec)
Show details on NVD website
To clipboard 

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