CVE-2026-50737— EnterpriseDB pglogical 权限许可和访问控制问题漏洞

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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.

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

带着不必要的权限执行

EnterpriseDB pglogical 权限许可和访问控制问题漏洞

EnterpriseDB pglogical是美国EnterpriseDB公司开源的一款数据库逻辑复制扩展。 EnterpriseDB pglogical 2.4.8之前版本存在权限许可和访问控制问题漏洞，该漏洞源于处理缺失列的行时默认表达式在超级用户权限下执行，导致攻击者可将角色从允许使用pglogical升级为完全超级用户。

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