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CVE-2018-6138

24
FAUCET Score

CVE-2018-6138 describes an insufficient policy enforcement vulnerability in the Extensions API of Google Chrome prior to version 67.0.3396.62. This flaw allowed an attacker to bypass navigation restrictions through a crafted Chrome Extension, provided they could convince a user to install it. Rated with a CVSS score of 8.1 (HIGH), this vulnerability has a network attack vector and low attack complexity, potentially leading to high confidentiality and integrity impacts. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 67.0.3396.62CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 48th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:67.0.3396.62-2.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2018-6138Moderate

chromium-browser: Overly permissive policy in Extensions

May 29, 2018

References

chromereleases.googleblog.com / 2018/05/stable-channel-update-for-desktop_58.html
crbug.com / 810220