Unnamed "Subscription" operation results in Denial-of-Service in apollographql/router

{
  "id": "5fa9fb48c038c0abe6c01b23daa41ba02f9d269492afce67af4468bd0c8fb72b",
  "url": "https://osv.dev/vulnerability/CVE-2023-41317",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Unnamed \"Subscription\" operation results in Denial-of-Service in apollographql/router",
    "summary": "The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled. It can be triggered when **all of the following conditions are met**: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 (\"impacted versions\"); **and** 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) **has a `subscription` type** with root-fields defined; **and** 3. The YAML configuration provided to the Router **has subscriptions enabled** (they are _disabled_ by default), either by setting `enabled: true` _or_ by setting a valid `mode` within the `subscriptions` object (as seen in [subscriptions' documentation](https://www.apollographql.com/docs/router/executing-operations/subscription-support/#router-setup)); **and** 4. An [anonymous](https://spec.graphql.org/draft/#sec-Anonymous-Operation-Definitions) (i.e., un-named) `subscription` operation (e.g., `subscription { ... }`) is received by the Router If **all four** of these criteria are met, the impacted versions will panic and terminate. There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrad",
    "evidence": "osv:CVE-2023-41317",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-41317",
      "aliases": [
        "CVE-2023-41317",
        "GHSA-w8vq-3hf9-xppx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apollographql/router",
              "type": "GIT",
              "events": [
                {
                  "introduced": "05a53da5c308dd1c2fe25caf600f39ed37cc3971"
                },
                {
                  "fixed": "891d41e9ea8f7f5817bdb1735cd602e12e8946ba"
                },
                {
                  "fixed": "b295c103dd86c57c848397d32e8094edfa8502aa"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apollographql:apollo_router:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.28.0"
                      },
                      {
                        "fixed": "1.29.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b295c103dd86c57c848397d32e8094edfa8502aa"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "891d41e9ea8f7f5817bdb1735cd602e12e8946ba"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.29.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.29.0",
            "v1.28.1",
            "v1.28.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-41317.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:47.232748974Z",
      "provider": "osv",
      "references": [
        "https://github.com/apollographql/router/releases/tag/v1.29.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41317.json",
        "https://github.com/apollographql/router/security/advisories/GHSA-w8vq-3hf9-xppx",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-41317",
        "https://github.com/apollographql/router/commit/b295c103dd86c57c848397d32e8094edfa8502aa"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-755"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41317.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-41317",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515027,
  "published_at": "2023-09-05T18:31:43.185+00:00"
}