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CVE-2019-5811

29
FAUCET Score

CVE-2019-5811 describes a critical vulnerability in Google Chrome versions prior to 74.0.3729.108, affecting various distributions like Debian and Fedora. This flaw, stemming from incorrect handling of Cross-Origin Resource Sharing (CORS) in ServiceWorker, allowed remote attackers to bypass the same-origin policy through a specially crafted HTML page. With a CVSS score of 8.8 (HIGH), it presents a significant risk, enabling high impact on confidentiality, integrity, and availability with low attack complexity and no prior privileges required. While no public exploit code (Metasploit, Nuclei, ExploitDB) is readily available and it's not listed in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
< 74.0.3729.108CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
sle-15CPE matchmatch criteria
cpe:2.3:o:opensuse:backports:sle-15:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 64th percentile among its peer group of 14,848 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-0:74.0.3729.108-1.el6_10
View patch

Vendor Advisories (1)

redhatCVE-2019-5811Moderate

chromium-browser: CORS bypass in Blink

Apr 23, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-06/msg00085.html
chromereleases.googleblog.com / 2019/04/stable-channel-update-for-desktop_23.html
crbug.com / 771815
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CPM7VPE27DUNJLXM4F5PAAEFFWOEND6X
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/FKN4GPMBQ3SDXWB4HL45II5CZ7P2E4AI
seclists.org / bugtraq/2019/Aug/19
security.gentoo.org / glsa/201908-18
debian.org / security/2019/dsa-4500