CVE-2026-118666: ardatan graphql-tools · Information Exposure
Affects ardatan graphql-toolsSource CVE Database V5
Not known to be exploited · CVSS 6.0 Medium : upgrade to 9.0.36 when convenient.
Data as of 28 Oct 2026, 21:14 UTC
- Patch
- Available – fixed in 9.0.36, 1.1.36
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade graphql-tools to 9.0.36; executor-legacy-ws to 1.1.36.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ardatangraphql-tools | Affected
| Fixed in
|
| @graphql-toolsexecutor-legacy-ws | Affected
| Fixed in
|
AI-suggested
Upgrade to version 1.1.36 or later of the GraphQL Tools legacy WebSocket executor package, where the issue is fixed. No other mitigation is indicated by the vendor advisory.
Description
CVE-2026-118666 is a vulnerability in the ardatan graphql-tools legacy WebSocket executor package prior to version 1.1.36. The issue arises because the executor reuses a single WebSocket and replaces its onmessage handler for overlapping subscriptions without verifying subscription operation IDs. This allows a subscriber to receive another user's authorized subscription data, exposing sensitive information. The flaw is fixed in version 1.1.36.
References
- github.com/ardatan/graphql-tools/security/advisories/GHSA-mp66-8ww2-pcwm (opens in a new tab)
- github.com/ardatan/graphql-tools/pull/8480 (opens in a new tab)
- github.com/ardatan/graphql-tools/commit/c2f226e6f68236be9e4a577f29faeaa92547458b (opens in a new tab)
- github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/executor-legacy-ws@1.1.36 (opens in a new tab)