{"id":"EUVD-2026-112473","revision":"43e7a3af7ae3495da797d5dd1ae24c8f","records":[{"revision":"43e7a3af7ae3495da797d5dd1ae24c8f","observedAt":"2026-11-06T00:45:25.955+00:00","statement":{"source":"euvd","id":"EUVD-2026-112473","aliases":["CVE-2026-118666","GHSA-mp66-8ww2-pcwm"],"title":"GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. Prior to version 1.1.36 of the GraphQL Tools legacy WebSocket executor package, buildWSLegacyExecutor in packages/executors/legacy-ws/src/index.ts reuses…","description":"GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. Prior to version 1.1.36 of the GraphQL Tools legacy WebSocket executor package, buildWSLegacyExecutor in packages/executors/legacy-ws/src/index.ts reuses one WebSocket and replaces its single websocket.onmessage handler whenever a new overlapping subscription starts. The handler delivers LEGACY_WS.DATA frames to the newest observer without comparing data.id with the subscription operation id, so a caller using the same executor can receive another user's authorized subscription payload while the earlier caller's stream is starved. This issue is fixed in version 1.1.36 of the GraphQL Tools legacy WebSocket executor package.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N","score":6,"severity":null}],"references":["https://github.com/ardatan/graphql-tools/security/advisories/GHSA-mp66-8ww2-pcwm","https://github.com/ardatan/graphql-tools/pull/8480","https://github.com/ardatan/graphql-tools/commit/c2f226e6f68236be9e4a577f29faeaa92547458b","https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/executor-legacy-ws@1.1.36"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112473","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 28, 2026, 8:45:58 PM","dateUpdated":"Nov 2, 2026, 11:58:49 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-112473","identifiers":["EUVD-2026-112473","CVE-2026-118666","GHSA-mp66-8ww2-pcwm"]},"retained":false,"historicalAffected":[]}],"coverage":[]}