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Vulnerabilities

Vulnerability · CVE-2026-118665

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

Published Oct 28, 2026 · GraphQL Tools: Per-request connection

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-118665. EPSS is 0.39%. Act only if a listed version of GraphQL Tools: Per-request connection is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (GraphQL Tools: Per-request connection).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Not established
Affected products
npm @graphql-tools

buildWSLegacyExecutor keeps a single closure-scoped object, executorConnectionParams, for the lifetime of the executor. Every execution that carries request.extensions.connectionParams merges those keys into that object with Object.assign, and the object is merged into the connection_init payload each time a new WebSocket opens. Nothing ever removes keys: cleanupWebsocket terminates the socket and nulls the handle but leaves executorConnectionParams intact, and a later request that simply omits a key skips the conditional update …

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm @graphql-toolsversion unspecified

How to fix CVE-2026-118665

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-118665. EPSS is 0.39%. Act only if a listed version of GraphQL Tools: Per-request connection is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2026 · GitLab Advisory Database

    Detected

    buildWSLegacyExecutor keeps a single closure-scoped object, executorConnectionParams, for the lifetime of the executor. Every execution that carries request.extensions.connectionParams merges those keys into that object with Object.assign, and the object is merged into the connection_init payload each time a new WebSocket opens. Nothing ever removes keys: cleanupWebsocket terminates the socket and

Sources

  • CVE.orgVulnerability recordCVE-2026-118665

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-118665

    30-day exploitation probability 0.39%

    first.org
  • GitLab Advisory DatabasePackage advisoryCVE-2026-118665

    buildWSLegacyExecutor keeps a single closure-scoped object, executorConnectionParams, for the lifetime of the executor. Every execution that carries request.extensions.connectionParams merges those keys into that object with Object.assign, and the object is merged into the connection_init payload each time a new WebSocket opens. Nothing ever removes keys: cleanupWebsocket terminates the socket and

    advisories.gitlab.com

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 7, 2026
  • GitLab Advisory DatabaseOct 30, 2026
  • CVE.orgOct 29, 2026