CVE-2016-10539

Name: CVE-2016-10539
Creator: NVD / NIST
Published: 2018-05-31T20:29:01.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.40%

Last modified Jun 17, 2026

CVE-2016-10539 is a vulnerability of currently unknown severity. negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string.. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string.

Metrics

EPSS Probability

1.40%

69.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Negotiator Project	Negotiator	<= 0.6.0

References

https://nodesecurity.io/advisories/106Third Party Advisory
https://nodesecurity.io/advisories/106Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2016-10539?

How severe is CVE-2016-10539?

Severity scoring for CVE-2016-10539 is pending analysis. The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.

How do I fix CVE-2016-10539?

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-2016-10539?

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

Scan your code now

Source: NVD / NIST