ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.
Weakness
The product uses or accesses a resource that has not been initialized.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ws | Ws_project | 8.0.0 (including) | 8.20.1 (excluding) |
| Red Hat Ansible Automation Platform 2.6 | RedHat | ansible-automation-platform-26/gateway-rhel9:1782761510 | * |
| Red Hat Developer Hub 1.9 | RedHat | rhdh/rhdh-hub-rhel9:1782761244 | * |
| Red Hat Discovery 2 | RedHat | discovery/discovery-ui-rhel9:1782166952 | * |
| Red Hat Hardened Images | RedHat | dotnet10-0-main-10.0.109-1.hum1 | * |
| Red Hat Hardened Images | RedHat | dotnet8-0-main-8.0.128-1.hum1 | * |
| Red Hat Hardened Images | RedHat | dotnet9-0-main-9.0.118-1.hum1 | * |
| Red Hat Hardened Images | RedHat | yarnpkg-main-1.22.22-18.1.hum1 | * |
| Node-ws | Ubuntu | upstream | * |
Potential Mitigations
References
- https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
- https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
- https://access.redhat.com/errata/RHSA-2026:26638
- https://access.redhat.com/errata/RHSA-2026:26994
- https://access.redhat.com/errata/RHSA-2026:27171
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:33574
- https://access.redhat.com/errata/RHSA-2026:34374
- https://access.redhat.com/errata/RHSA-2026:7655
- https://access.redhat.com/security/cve/CVE-2026-45736
- https://bugzilla.redhat.com/show_bug.cgi?id=2477914
- https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45736.json