CyberRota Analysis
AI-GeneratedThe vulnerability allows an attacker with access to a PostgreSQL publisher to exploit missing columns in replicated changes, enabling them to execute functions on the subscriber as a superuser due to the elevated privileges of the apply worker. This presents a significant risk in managed deployments where non-superuser roles can create subscriptions, as it provides a pathway for privilege escalation. Organizations utilizing pglogical in such environments should prioritize addressing this issue to mitigate potential security breaches.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
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.
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