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CVE-2018-6341

23
FAUCET Score

CVE-2018-6341 describes a cross-site scripting (XSS) vulnerability in React applications using the ReactDOMServer API. Specifically, user-supplied attribute names were not properly escaped during HTML rendering, potentially allowing for malicious script injection. This flaw impacted React versions 16.0.x through 16.4.x and was addressed in subsequent patch releases. The vulnerability carries a CVSS v3 score of 6.1 (MEDIUM), indicating a network-based attack with low complexity, requiring user interaction, and leading to partial confidentiality and integrity impacts. Its EPSS score is low, suggesting a low probability of exploitation. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, consistent with a large percentage of reported vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
>= 16.0.0, < 16.0.1CPE matchmatch criteria
cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:*
>= 16.1.0, < 16.1.2CPE matchmatch criteria
cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:*
>= 16.2.0, < 16.2.1CPE matchmatch criteria
cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:*
>= 16.3.0, < 16.3.3CPE matchmatch criteria
cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:*
>= 16.4.0, < 16.4.2CPE matchmatch criteria
cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.43%
Probability of exploitation in next 30 days
EPSS Percentile
87.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0343 is in the 94th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

npmpatch availablevia ghsa
Product: react-domFixed in: 16.0.1
npmpatch availablevia ghsa
Product: react-domFixed in: 16.1.2
npmpatch availablevia ghsa
Product: react-domFixed in: 16.2.1
npmpatch availablevia ghsa
Product: react-domFixed in: 16.3.3
npmpatch availablevia ghsa
Product: react-domFixed in: 16.4.2

Vendor Advisories (1)

npmGHSA-mvjj-gqq2-p4hwmedium

Cross-Site Scripting in react-dom

Jan 4, 2019

References

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