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CVE-2020-6506

24
FAUCET Score

CVE-2020-6506 describes an insufficient policy enforcement vulnerability in Google Chrome's WebView on Android, affecting versions prior to 83.0.4103.106. This flaw allowed a remote attacker to bypass site isolation through a specially crafted HTML page. With a CVSS score of 6.5 (MEDIUM), the vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L) and could lead to high integrity impacts (I:H). There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, though it has received limited community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 83.0.4103.106CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.72%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0372 is in the 95th percentile among its peer group of 26,234 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

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 (3)

npmpatch availablevia ghsa
Product: react-native-webviewFixed in: 11.0.0
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:83.0.4103.106-1.el6_10
View patch
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

npmGHSA-36j3-xxf7-4pqgmedium

Android WebView Universal Cross-site Scripting

Oct 2, 2020
redhatCVE-2020-6506Important

chromium-browser: Insufficient policy enforcement in WebView

Jun 15, 2020

References

chromereleases.googleblog.com / 2020/06/stable-channel-update-for-desktop_15.html
Vendor Advisory
crbug.com / 1083819
Issue TrackingPermissions RequiredThird Party Advisory
lists.apache.org / thread.html/r1ab80f8591d5c2147898076e3945dad1c897513630aabec556883275%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/r1eadf38b38ee20405811958c8a01f78d6b28e058c84c9fa6c1a8663d%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/r2769c33da7f7ece7e4e31837c1e1839d6657c7c13bb8d228670b8da0%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/ra58733fbb88d5c513b3f14a14850083d506b9129103e0ab433c3f680%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/rc0ebe639927fa09e222aa56bf5ad6e700218f334ecc6ba9da4397728%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/rc81e12fc9287f8743d59099b1af40f968f1cfec9eac98a63c2c62c69%40%3Cissues.cordova.apache.org%3E
lists.apache.org / thread.html/rf082834ad237f78a63671aec0cef8874f9232b7614529cc3d3e304c5%40%3Ccommits.cordova.apache.org%3E
security.gentoo.org / glsa/202007-08
Third Party Advisory
security.gentoo.org / glsa/202101-30
Third Party Advisory