High 8.2Published Oct 28, 2026

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

Updated under an hour ago (Oct 29, 2026, 2:00 AM ET)

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Every CVE for ardatan graphql-tools

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-613
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

ardatan graphql-tools ardatan:graphql_tools (from the name)	before 9.0.36	CNA record
@graphql-tools executor-legacy-ws graphql_tools:executor_legacy_ws (from the name)	before 1.1.36	CNA record

References

References

https://github.com/ardatan/graphql-tools/security/advisories/GHSA-434m-5hcj-pxf3	x-refsource-confirm
https://github.com/ardatan/graphql-tools/pull/8480	x-refsource-misc
https://github.com/ardatan/graphql-tools/commit/c2f226e6f68236be9e4a577f29faeaa92547458b	x-refsource-misc
https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/executor-legacy-ws@1.1.36	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.