Live › vulnerability › CVE-2026-104949
Go to dashboardWarehousePG's gp_add_coordinator_standby() function, also named gp_add_master_standby(), does not require superuser rights, so a low-privileged user with a utility-mode connection can insert a fake standby coordinator entry into gp_segment_configuration. The fake entry blocks administrators from adding a real standby until a superuser removes it, and user data is not exposed or modified.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Clusters running WarehousePG 6.27.1 through 6.27.6 or 7.2.1 through 7.6.0 are exposed, and the risk is that any role able to open a utility-mode connection can call the function. Clusters with no standby configured are the ones where the fake entry takes effect. Teams on other WarehousePG versions or on other Greenplum-derived databases can skip it.
No product ranges from the sources yet.
SELECT version(); in the WarehousePG database to confirm whether the release is in 6.27.1 through 6.27.6 or 7.2.1 through 7.6.0.gp_segment_configuration.6.27.6 or WarehousePG 7 past 7.6.0 to a fixed release (the fixed version is unknown from the sources).gp_segment_configuration with a superuser account after upgrading.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
WarehousePG (WHPG) 6.27.1 through 6.27.6 and 7.2.1 through 7.6.0 are affected by a missing authorization vulnerability (CWE-862) in gp_add_coordinator_standby(). The function is named gp_add_master_standby() in WHPG 6, and WHPG 7 keeps that name as an alias. Unlike the other segment add and remove functions, it does not require superuser privileges. A low-privileged user who can open a utility-mode connection can use it to add a fake standby coordinator entry to gp_segment_configuration on a cluster that has no standby configured. Administrators then cannot add a real standby until a superuser removes the fake entry. User data is not exposed or modified.
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