What’s Vulnerable › Vulnerabilities

CVE-2017-16031

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-04 · updated 2026-06-17
• Weakness: CWE-330

Description

Socket.io is a realtime application framework that provides communication via websockets. Because socket.io 0.9.6 and earlier depends on `Math.random()` to create socket IDs, the IDs are predictable. An attacker is able to guess the socket ID and gain access to socket.io servers, potentially obtaining sensitive information.

Affected products

• socketio socket.io: through 0.9.6

References

• https://github.com/socketio/socket.io/commit/67b4eb9abdf111dfa9be4176d1709374a2b4ded8
• https://github.com/socketio/socket.io/issues/856
• https://github.com/socketio/socket.io/pull/857
• https://nodesecurity.io/advisories/321
• https://github.com/socketio/socket.io/commit/67b4eb9abdf111dfa9be4176d1709374a2b4ded8
• https://github.com/socketio/socket.io/issues/856
• https://github.com/socketio/socket.io/pull/857
• https://nodesecurity.io/advisories/321

Get alerted when CVE-2017-16031 or the next vulnerability affects your stack