https://db.gcve.eu/rss/recent/all/10 Most recent entries from all 2026-11-02T17:32:16.817050+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent entries. https://db.gcve.eu/vuln/fkie_cve-2026-118666 fkie_cve-2026-118666 2026-11-02T17:32:16.833336+00:00

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.

 https://db.gcve.eu/vuln/ghsa-mp66-8ww2-pcwm GHSA-mp66-8ww2-pcwm — GraphQL Tools: Shared legacy executor routes one subscription's results to a different caller 2026-11-02T17:32:16.833471+00:00

Affected: npm: @graphql-tools/executor-legacy-ws

# Cross-tenant subscription data leak in `@graphql-tools/executor-legacy-ws`: a shared `websocket.onmessage` is replaced on every `subscribe()`, and `DATA` frames are delivered without checking the protocol operation id

## Report metadata

| Field | Value | | --- | --- | | Package | `@graphql-tools/executor-legacy-ws` (npm, `pkg:npm/%40graphql-tools/executor-legacy-ws`) | | Repository | https://github.com/ardatan/graphql-tools | | Component | `buildWSLegacyExecutor` → the returned executor's `subscribe(observer)` / `websocket.onmessage` handler | | Vulnerability class | Cross-tenant data leak (subscription results delivered to the wrong caller) | | Verified against | Source at `b5d1c36ebb8ed3868260ffee5bbcbb423ad5c1f1` (package version 1.1.33); published npm tarball `1.1.33` with matching source at `d304214db06e8a4ce9cb41138f199e3bc6ed36f2`; the same behaviour also reproduces on the current release `1.1.35` | | API surface | Public documented API (`buildWSLegacyExecutor`) | | Affected in default configuration | Yes — `ensureWebsocket()` reuses an already-`OPEN` socket (`index.ts:35-42`), and the socket has a single mutable `onmessage` property (`index.ts:113`). No single-operation-only restriction is documented, and the return type is the general reusable `DisposableExecutor` (`packages/utils/src/executor.ts:34-57`) |

Affected version range: the range recorded for this finding is `<= 1.1.33`, but that is understated — the same proof of concept reproduces on `1.1.35`, and a…