{"id":"CVE-2023-45812","aliases":["GHSA-r344-xw3p-2frj"],"url":"https://o3.security/vulnerability/CVE-2023-45812","summary":"Improper Check or Handling of Exceptional Conditions in apollo-router","details":"### Impact\nThe Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when a multi-part response is sent. When users send queries to the router that uses the `@defer` or Subscriptions, the Router will panic.\n \nTo be vulnerable, users of Router must have a coprocessor with `coprocessor.supergraph.response` configured in their `router.yaml` and also to support either `@defer` or Subscriptions.  \n\n### Patches\nRouter version 1.33.0 has a fix for this vulnerability. https://github.com/apollographql/router/pull/4014 fixes the issue.  \n\n### Workarounds\nFor affected versions, avoid using the coprocessor supergraph response:\n```yml\n# do not use this stage in your coprocessor configuration\ncoprocessor:\n  supergraph:\n    response:\n``` \n\nOr you can disable defer and subscriptions support:\n```yml\n# disable defer and subscriptions:\nsupergraph:\n  defer_support: false # enabled by default\nsubscription:\n  enabled: false # disabled by default\n```\nand continue to use the coprocessor supergraph response.\n### References\nhttps://github.com/apollographql/router/issues/4013\n","published":"2023-10-18T21:29:32.731Z","modified":"2026-08-12T03:51:33.206243955Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00726,"percentile":0.52457,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"apollo-router","fixedVersion":"1.33.0"}],"fix":{"url":"https://github.com/apollographql/router/pull/4014","label":"apollographql/router#4014"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45812.json"},{"type":"ADVISORY","url":"https://github.com/apollographql/router/security/advisories/GHSA-r344-xw3p-2frj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45812"},{"type":"FIX","url":"https://github.com/apollographql/router/pull/4014"},{"type":"WEB","url":"https://github.com/apollographql/router/issues/4013"},{"type":"WEB","url":"https://github.com/apollographql/router/commit/b917b8c117b46a2d508428c0856f4927dfcfc341"},{"type":"PACKAGE","url":"https://github.com/apollographql/router"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.206243955Z"}}