Is there a public exploit for CVE-2026-45736?

No public exploit for CVE-2026-45736 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-45736?

CVE-2026-45736 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.75%.

What does CVE-2026-45736 affect?

CVE-2026-45736 affects websockets ws.

7.5 High

ws is an open source WebSocket client and server for Node.js.

CVE-2026-45736

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.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 0.75% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 15 May 2026
Last updated: 26 October 2026
Affected: websockets · ws
Weakness: CWE-824, CWE-908
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

At the source

References

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