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CVE-2026-34976— Dgraph Affected by Pre-Auth Database Overwrite + SSRF + File Read via restoreTenant Missing Authorization

Quick assessment

Affected
dgraph-io dgraph
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Dgraph是Dgraph开源的一个具有图形后端的水平可扩展分布式 GraphQL 数据库。 Dgraph 25.3.1之前版本存在安全漏洞，该漏洞源于restoreTenant管理突变缺少授权中间件，可能导致未经身份验证的攻击者覆盖数据库、读取服务器端文件和执行SSRF。

CVSS 10.0 · Critical EPSS 1.82% · P77

Public Exploits 1

Nuclei · 1 CVE-2026-34976.yaml [template]
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I. Basic Information for CVE-2026-34976

Vulnerability Information
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Vulnerability Title
Dgraph Affected by Pre-Auth Database Overwrite + SSRF + File Read via restoreTenant Missing Authorization
Source: CVE Program / CVE List V5
Vulnerability Description
Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing from the authorization middleware config (admin.go), making it completely unauthenticated. Unlike the similar restore mutation which requires Guardian-of-Galaxy authentication, restoreTenant executes with zero middleware. This mutation accepts attacker-controlled backup source URLs (including file:// for local filesystem access), S3/MinIO credentials, encryption key file paths, and Vault credential file paths. An unauthenticated attacker can overwrite the entire database, read server-side files, and perform SSRF. This vulnerability is fixed in 25.3.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Dgraph 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dgraph是Dgraph开源的一个具有图形后端的水平可扩展分布式 GraphQL 数据库。 Dgraph 25.3.1之前版本存在安全漏洞，该漏洞源于restoreTenant管理突变缺少授权中间件，可能导致未经身份验证的攻击者覆盖数据库、读取服务器端文件和执行SSRF。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
dgraph-io dgraph < 25.3.1 -

II. Public POCs for CVE-2026-34976

# POC Description Source Link Shenlong Link
1 Dgraph <=v25.3.0 contains an authentication bypass caused by missing authorization middleware for the restoreTenant admin mutation, letting unauthenticated attackers overwrite the database, read files, and perform SSRF, exploit requires no authentication. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-34976.yaml POC Details
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III. Intelligence Information for CVE-2026-34976

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Vendor Advisories for CVE-2026-34976 (1)

IV. Related Vulnerabilities

Same product: dgraph
Same vendor: dgraph-io
Same weakness: CWE-862

V. Comments for CVE-2026-34976

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