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Back to active CVEs
High · CVSS 8.2CVE-2026-118665GHSA-434M-5HCJ-PXF3

GraphQL Tools: Per-request connection parameters persist into later users' WebSocket authenticationsCVE-2026-118665

Answer in brief

CVE-2026-118665 records a High severity (CVSS 8.2) vulnerability in GraphQL Tools: Per-request connection parameters persist into later users' WebSocket authentications. The current sources do not mark it as known exploited. The current feed maps @graphql-tools/executor-legacy-ws (generic), ardatan/graphql-tools (generic), @graphql-tools/executor-legacy-ws (npm), @graphql-tools/executor-legacy-ws (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 28, 2026Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 28, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.2
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps @graphql-tools/executor-legacy-ws (generic), ardatan/graphql-tools (generic), @graphql-tools/executor-legacy-ws (npm), @graphql-tools/executor-legacy-ws (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
@graphql-tools/executor-legacy-wsgeneric<1.1.361.1.36
ardatan/graphql-toolsgeneric<9.0.369.0.36
@graphql-tools/executor-legacy-wsnpm<=1.1.351.1.36
@graphql-tools/executor-legacy-wsnpm<=1.1.351.1.36

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for @graphql-tools/executor-legacy-ws, ardatan/graphql-tools, @graphql-tools/executor-legacy-ws.
  2. 2Review the reported fix. Update @graphql-tools/executor-legacy-ws to 1.1.36; ardatan/graphql-tools to 9.0.36; @graphql-tools/executor-legacy-ws to 1.1.36; @graphql-tools/executor-legacy-ws to 1.1.36 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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 retains request.extensions.connectionParams in the closure-scoped executorConnectionParams object after cleanupWebsocket closes a connection. When one executor is reused across different authorization contexts, a later request that omits a sensitive key can send an earlier caller's Authorization or tenant value in its connection_init payload, causing the downstream server to authenticate the later caller as the earlier user. Applications that create a new executor for every request are not affected. This issue is fixed in version 1.1.36 of the GraphQL Tools legacy WebSocket executor package.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • GraphQL Tools: Shared legacy executor routes one subscription's results to a different callerSame @graphql-tools/executor-legacy-ws package
  • Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTMLSame npm ecosystem
  • Happy DOM: Cookie scope forgery: no DNS-label boundary on Domain= matching , attacker origin sets victim cookiesSame npm ecosystem
  • @hono/node-server: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static pathsSame npm ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-613
Source
CVE List V5
Source checked
Oct 28, 2026
References
5 linked sources
Open source record