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CVE-2018-6091

21
FAUCET Score

CVE-2018-6091 describes a vulnerability in Google Chrome versions prior to 66.0.3359.117, where Service Workers could intercept requests from <embed> or <object> tags, potentially leading to cross-origin data leakage. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) and could result in high confidentiality impact (C:H) if exploited by a remote attacker. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB are all none), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
< 66.0.3359.117CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.14%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0214 is in the 90th percentile among its peer group of 26,221 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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:66.0.3359.117-1.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2018-6091Important

chromium-browser: Incorrect handling of plug-ins by Service Worker

Apr 17, 2018

References

access.redhat.com / errata/RHSA-2018:1195
chromereleases.googleblog.com / 2018/04/stable-channel-update-for-desktop.html
crbug.com / 771933
security.gentoo.org / glsa/201804-22
debian.org / security/2018/dsa-4182
securityfocus.com / bid/103917