CVE-2016-10536

Name: CVE-2016-10536
Creator: NVD / NIST
Published: 2018-05-31T20:29:01.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.01%

Last modified Jun 17, 2026

CVE-2016-10536 is a vulnerability of currently unknown severity. engine.io-client is the client for engine.io, the implementation of a transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. The vulnerability is related to the way that node.js handles the `rejectUnauthorized` setting. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

engine.io-client is the client for engine.io, the implementation of a transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. The vulnerability is related to the way that node.js handles the `rejectUnauthorized` setting. If the value is something that evaluates to false, certificate verification will be disabled. This is problematic as engine.io-client 1.6.8 and earlier passes in an object for settings that includes the rejectUnauthorized property, whether it has been set or not. If the value has not been explicitly changed, it will be passed in as `null`, resulting in certificate verification being turned off.

Metrics

EPSS Probability

1.01%

58.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Socket	Engine.Io-Client	<= 1.6.8

References

https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1Patch, Third Party Advisory
https://nodesecurity.io/advisories/99Third Party Advisory
https://www.cigital.com/blog/node-js-socket-io/Third Party Advisory
https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1Patch, Third Party Advisory
https://nodesecurity.io/advisories/99Third Party Advisory
https://www.cigital.com/blog/node-js-socket-io/Third Party Advisory

Timeline

Published: May 31, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-10536?

How severe is CVE-2016-10536?

Severity scoring for CVE-2016-10536 is pending analysis. The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2016-10536?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-10536?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST