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CVE-2026-102748— Dgraph: Zero Unauthenticated HTTP Admin removeNode Denial of Service

Quick assessment

Affected
dgraph-io dgraph
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 9.2 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
dgraph-io dgraph < 25.4.0 affected
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I. Basic Information for CVE-2026-102748

Vulnerability Information

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Vulnerability Title
Dgraph: Zero Unauthenticated HTTP Admin removeNode Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
dgraph-io dgraph < 25.4.0 -

II. Public POCs for CVE-2026-102748

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III. Intelligence Information for CVE-2026-102748

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Patches & Fixes for CVE-2026-102748 (1)

Other References for CVE-2026-102748 (2)

IV. Related Vulnerabilities

Same product: dgraph
Same vendor: dgraph-io
Same weakness: CWE-306

V. Comments for CVE-2026-102748

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