{"id":"CVE-2026-102748","summary":"Dgraph: Zero Unauthenticated HTTP Admin removeNode Denial of Service","details":"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.","aliases":["GHSA-qj98-gp63-54xj"],"modified":"2026-10-15T10:47:31.760436141Z","published":"2026-10-14T18:34:15.971Z","database_specific":{"cwe_ids":["CWE-306","CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102748.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102748.json"},{"type":"FIX","url":"https://github.com/dgraph-io/dgraph/commit/c32f6041387fa631dbc057e265b71aec3384ead1"},{"type":"WEB","url":"https://github.com/dgraph-io/dgraph/releases/tag/v25.4.0"},{"type":"ADVISORY","url":"https://github.com/dgraph-io/dgraph/security/advisories/GHSA-qj98-gp63-54xj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102748"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dgraph-io/dgraph","events":[{"introduced":"0"},{"fixed":"a796c8420b5fda671e0a0f8cb76f474945e31c50"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"25.4.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v25.3.8","v25.3.7","v25.3.6","v25.3.5","v25.3.4","v25.3.3","v25.3.2","v25.3.1","v25.3.0","v25.2.0","v25.1.0","v25.1.0-preview1","v25.0.0","v25.0.0-preview6","v25.0.0-preview5","v25.0.0-preview4","v25.0.0-preview3","v25.0.0-preview2","v25.0.0-preview1","v24.0.2","v24.0.2-rc1","v24.0.1","v24.0.0","v24.0.0-rc1","v23.1.0","v24.0.0-alpha3","v24.0.0-alpha2","v24.0.0-alpha","v23.1.0-rc1","v23.1.0-rc2","v23.0.1","v22.0.2","v23.0.0","v23.0.0-rc1","v23.0.0-beta1","v22.0.0","v22.0.0-RC1-20221003","v21.03.2","v21.03.1","v21.03.0","v20.11.0-rc1","release/v20.11-rc1","v1.0.8","v1.0.9","v2.0.0-rc1","v2.0.0-beta1","v1.2.0-rc1","v1.1.1","v1.1.1-rc2","v1.1.1-rc1","v1.1.0","v1.1.0-rc3","v1.1.0-rc2","v1.0.12-rc3","v1.0.12-rc2","v1.0.12-rc1","v1.0.11","v1.0.11-rc4","v1.0.11-rc3","v1.0.11-rc2","v1.0.10","v1.0.11-rc1","v1.0.10-rc1","v1.0.9-rc5","v1.0.9-rc4","v1.0.9-rc3","v1.0.9-rc2","v1.0.9-rc1","v1.0.8-rc2","v1.0.8-rc1","v1.0.7a","v1.0.7","v1.0.7-rc4","v1.0.7-rc3","v1.0.7-rc2","nightly","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.9.4","v0.9.0","v0.8.3","v0.8.1","v0.8.0","v0.4.2","v0.4.1","v0.4.0","v0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102748.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}