Android WebView Universal Cross-site Scripting
A universal cross-site scripting (UXSS) vulnerability, CVE-2020-6506 (https://crbug.com/1083819), has been identified in the Android WebView system component, which allows cross-origin iframes to execute arbitrary JavaScript in the top-level document. This vulnerability affects React Native apps which use a react-native-webview that allows navigation to arbitrary URLs, and when that app runs on systems with an Android WebView version prior to 83.0.4103.106.
Pending mitigation
Ensure users update their Android WebView system component via the Google Play Store to 83.0.4103.106 or higher to avoid this UXSS. 'react-native-webview' is working on a mitigation but it could take some time.
References
https://alesandroortiz.com/articles/uxss-android-webview-cve-2020-6506/
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | react-native-webview | < 11.0.0 | 11.0.0 |
References
- https://github.com/react-native-community/react-native-webview/security/advisories/GHSA-36j3-xxf7-4pqg
- https://github.com/react-native-webview/react-native-webview/security/advisories/GHSA-36j3-xxf7-4pqg
- https://nvd.nist.gov/vuln/detail/CVE-2020-6506
- https://github.com/react-native-webview/react-native-webview/pull/1747
- https://www.npmjs.com/advisories/1560
- https://security.gentoo.org/glsa/202101-30
- https://security.gentoo.org/glsa/202007-08
- https://lists.apache.org/thread.html/rf082834ad237f78a63671aec0cef8874f9232b7614529cc3d3e304c5@%3Ccommits.cordova.apache.org%3E
- https://lists.apache.org/thread.html/rc81e12fc9287f8743d59099b1af40f968f1cfec9eac98a63c2c62c69@%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/rc0ebe639927fa09e222aa56bf5ad6e700218f334ecc6ba9da4397728@%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/ra58733fbb88d5c513b3f14a14850083d506b9129103e0ab433c3f680@%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/r2769c33da7f7ece7e4e31837c1e1839d6657c7c13bb8d228670b8da0@%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/r1eadf38b38ee20405811958c8a01f78d6b28e058c84c9fa6c1a8663d@%3Cissues.cordova.apache.org%3E
- https://lists.apache.org/thread.html/r1ab80f8591d5c2147898076e3945dad1c897513630aabec556883275@%3Cissues.cordova.apache.org%3E
- https://github.com/react-native-webview/react-native-webview/releases/tag/v11.0.0
- https://github.com/react-native-community/react-native-webview
- https://crbug.com/1083819
- https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop_15.html
- https://alesandroortiz.com/articles/uxss-android-webview-cve-2020-6506
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N- Weakness (CWE)
CWE-79, CWE-863- Platform
- npm
- Package
react-native-webview- Disclosed
- 02.10.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-36j3-xxf7-4pqg - CC BY 4.0
Vulnerability history: react-native-webview
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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