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CVE-2026-103921GHSA-6FW5-9HQ8-W87G

GraphQL Tools: TLS Certificate Validation Disabled in Legacy GraphQL WebSocket Executor

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.1.35
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. Prior to 1.1.35, the executor-legacy-ws buildWSLegacyExecutor() function hardcodes TLS certificate rejection off for Node.js connections to wss:// endpoints. Applications using the executor directly, or url-loader with SubscriptionProtocol.LEGACY_WS, can therefore accept an attacker-controlled certificate when a network-positioned attacker intercepts the connection. Authentication material in connectionParams or headers can be disclosed, and subscription data can be modified. Browser WebSocket clients are unaffected because browsers enforce certificate validation. This issue is fixed in version 1.1.35.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • ardatan graphql-tools

    fixed in 1.1.35

  • @graphql-tools executor-legacy-ws

    fixed in 1.1.35

  • @graphql-tools/executor-legacy-wsnpm

    fixed in 1.1.35

References 4

GitHub · ardatan/graphql-tools