CVE-2026-45736
4.4
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| websockets | ws | >= 8.0.0, < 8.20.1 | affected |
Weaknesses
- CWE-908: CWE-908: Use of Uninitialized Resource
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
Additional References
ws: ws: Uninitialized memory disclosure via websocket.close() with TypedArray
Additional References
- https://access.redhat.com/security/cve/CVE-2026-45736
- https://bugzilla.redhat.com/show_bug.cgi?id=2477914
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45736.json
- https://access.redhat.com/errata/RHSA-2026:34374
- https://access.redhat.com/errata/RHSA-2026:33574
- https://access.redhat.com/errata/RHSA-2026:29197
- 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-2026:7655
References
- https://github.com/websockets/ws/security/advisories/GHSA-58qx-3vcg-4xpx
- https://github.com/websockets/ws/commit/c0327ec15a54d701eb6ccefaa8bef328cfc03086
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.