CVE-2018-6341

Name: CVE-2018-6341
Creator: NVD / NIST
Published: 2018-12-31T22:29:00.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 3.43%

Last modified Jun 17, 2026

CVE-2018-6341 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. React applications which rendered to HTML using the ReactDOMServer API were not escaping user-supplied attribute names at render-time. That lack of escaping could lead to a cross-site scripting vulnerability. EPSS estimates a 3.43% chance of exploitation in the next 30 days.

Description

React applications which rendered to HTML using the ReactDOMServer API were not escaping user-supplied attribute names at render-time. That lack of escaping could lead to a cross-site scripting vulnerability. This issue affected minor releases 16.0.x, 16.1.x, 16.2.x, 16.3.x, and 16.4.x. It was fixed in 16.0.1, 16.1.2, 16.2.1, 16.3.3, and 16.4.2.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

3.43%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Facebook	React	>= 16.0.0, < 16.0.1
Facebook	React	>= 16.1.0, < 16.1.2
Facebook	React	>= 16.2.0, < 16.2.1
Facebook	React	>= 16.3.0, < 16.3.3
Facebook	React	>= 16.4.0, < 16.4.2

References

https://reactjs.org/blog/2018/08/01/react-v-16-4-2.htmlVendor Advisory
https://twitter.com/reactjs/status/1024745321987887104Vendor Advisory
https://reactjs.org/blog/2018/08/01/react-v-16-4-2.htmlVendor Advisory
https://twitter.com/reactjs/status/1024745321987887104Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-6341?

How severe is CVE-2018-6341?

CVE-2018-6341 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 3.43% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6341?

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-2018-6341?

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

Scan your code now

Source: NVD / NIST