Remote Memory Disclosure in ws

Description

Versions of ws prior to 1.0.1 are affected by a remote memory disclosure vulnerability.

In certain rare circumstances, applications which allow users to control the arguments of a client.ping() call will cause ws to send the contents of an allocated but non-zero-filled buffer to the server.

Recommendation

Update the ws package to the latest compatible version. Followings are version details:

• Affected version(s): < 1.0.1
• Patched version(s): 1.0.1

References

• GHSA-2mhh-w6q8-5hxw
• www.npmjs.com
• CVE-2016-10518
• CWE-201
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• ws: Uninitialized memory disclosure - CVE-2026-45736
• @sveltejs/kit has memory amplification DoS vulnerability in Remote Functions binary form deserializer (application/x-sve - CVE-2026-22803
• DoS due to excessively large websocket message in ws - CVE-2016-10542
• LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern - CVE-2026-33287

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Tags:

npm

ws