CVE-2026-103921
highGraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/ardatan/graphql-tools/commit/3831a0661514c91d99971052f983552556880402 security-advisories@github.com
- https://github.com/ardatan/graphql-tools/pull/8426 security-advisories@github.com
- https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/executor-legacy-ws@1.... security-advisories@github.com
- https://github.com/ardatan/graphql-tools/security/advisories/GHSA-6fw5-9hq8-w87g security-advisories@github.com