Dgraph: DQL Injection via unvalidated regexp filter argument in GraphQL query rewriter

{
  "id": "cdc44070b6eea1439965a95c528c3edb8d452791ae834eb9542c66d958a65bc1",
  "url": "https://osv.dev/vulnerability/CVE-2026-63637",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Dgraph: DQL Injection via unvalidated regexp filter argument in GraphQL query rewriter",
    "summary": "Dgraph is an open source distributed GraphQL database. Prior to 25.3.8, maybeQuoteArg in graphql/resolve/query_rewriter.go passes regexp filter strings into generated DQL without quoting or validating the /pattern/flags form, allowing crafted GraphQL query or mutation filters to inject DQL operators, disclose unintended nodes, or expand modification and deletion targets. This issue is fixed in version 25.3.8.",
    "evidence": "osv:CVE-2026-63637",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-63637",
      "aliases": [
        "CVE-2026-63637",
        "GHSA-33p8-wc97-5qcj"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dgraph-io/dgraph",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "59eefd193d32ab85751f236a112c0307f0d6b998"
                },
                {
                  "fixed": "aaff09ab9608f87d88e9d601e71d271306083392"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "25.3.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "aaff09ab9608f87d88e9d601e71d271306083392"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v25.3.7",
            "v25.3.6",
            "v25.3.5",
            "v25.3.4",
            "v25.3.3",
            "v25.3.2",
            "v25.3.1",
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            "v25.0.0",
            "v25.0.0-preview6",
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            "v25.0.0-preview1",
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            "v24.0.2-rc1",
            "v24.0.1",
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            "v22.0.0-RC1-20221003",
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            "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",
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            "v1.0.8-rc1",
            "v1.0.7a",
            "v1.0.7",
            "v1.0.7-rc4",
            "v1.0.7-rc3",
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            "nightly",
            "v1.0.5",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63637.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.542280427Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63637.json",
        "https://github.com/dgraph-io/dgraph/security/advisories/GHSA-33p8-wc97-5qcj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-63637",
        "https://github.com/dgraph-io/dgraph/commit/aaff09ab9608f87d88e9d601e71d271306083392"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-943"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63637.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-63637",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519070,
  "published_at": "2026-08-06T20:20:32.352+00:00"
}