React
CVE-2018-6341
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
React applications which rendered to HTML using the ReactDOMServer API were not escaping user-supplied attribute names at render-time. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Facebook React.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from Vendor (fb) · only source for this CVE.
CVSS VectorVendor: fb
DescriptionCVE.org
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)CVE.org
React Server Components in React 19.x contain a critical pre-authentication remote code execution vulnerability (CVE-202
Pre-authentication denial of service in React Server Components (versions 19.0.0 through 19.2.1) allows unauthenticated
Information disclosure in React Server Components 19.x, distributed as react-server-dom-webpack, react-server-dom-turbop
react-native-keys version 0.7.11 contains a sensitive information disclosure vulnerability where encryption ciphers and
Unsafe deserialization in React Server Components Server Function endpoints allows remote unauthenticated attackers to t
HTML injection in Preact and React through unsafe JSON deserialization allows remote attackers to inject arbitrary scrip
Reflected XSS in Repostat's RepoCard React component prior to version 1.0.1 allows attackers to execute arbitrary JavaSc
OS command injection in create-react-app's react-dev-utils component enables remote code execution on macOS developer wo
Refine's @refinedev/inferencer package through version 7.0.0 interpolates API field names straight into generated JSX so
Uncontrolled resource consumption in React Server Components (react-server-dom-parcel, react-server-dom-turbopack, react
Simple Membership (WordPress plugin) versions up to 4.7.0 contains a security vulnerability (CVSS 6.5).
React-Router versions up to 6.30.1 is affected by url redirection to untrusted site (open redirect) (CVSS 6.5).
GitHub PoC
Exploit-DB