Dgraph-io Dgraph up to 25.3.x Administrative Route Registration dgraph/cmd/zero/run.go Server.RemoveNode id/group privileges management

Summaryinfo

A vulnerability categorized as critical has been discovered in Dgraph-io Dgraph up to 25.3.x. The affected element is the function Server.RemoveNode of the file dgraph/cmd/zero/run.go of the component Administrative Route Registration. Executing a manipulation of the argument id/group can lead to privileges management. This vulnerability is handled as CVE-2026-102748. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Dgraph-io Dgraph up to 25.3.x. It has been declared as critical. This vulnerability affects the function Server.RemoveNode of the file dgraph/cmd/zero/run.go of the component Administrative Route Registration. The manipulation of the argument id/group with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Dgraph is an open source distributed GraphQL database. Prior to 25.4.0, Dgraph Zero registers administrative HTTP routes on port 6080 without authentication when the administrative interface is enabled. The /removeNode route accepts attacker-controlled id and group values and passes them to Server.RemoveNode, where group 0 can trigger ProposePeerRemoval. A remote unauthenticated attacker who can reach the Zero HTTP port can read topology through /state, allocate identifiers through /assign, access the exposed /moveTablet administrative route, or remove membership through /removeNode, disrupting the Zero control plane and destabilizing Alpha nodes that depend on Zero. The route registration occurs in dgraph/cmd/zero/run.go, and the demonstrated membership-removal path reaches Server.RemoveNode and ProposePeerRemoval. This issue is fixed in version 25.4.0.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-102748 since 09/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 25.4.0 eliminates this vulnerability.

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Productinfo

Vendor

• Dgraph-io

Name

• Dgraph

Version

• 25.0
• 25.1
• 25.2
• 25.3

Website

• Product: https://github.com/dgraph-io/dgraph/

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