Insufficient policy enforcement in extensions API in Google Chrome prior to 75.0.3770.80 allowed an attacker who convinced a user to instal…

published 2019-06-27 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15409

cvss: 4.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Insufficient policy enforcement in extensions API in Google Chrome prior to 75.0.3770.80 allowed an attacker who convinced a user to install a malicious extension to bypass restrictions on file URIs via a crafted Chrome Extension.

Patch / fix

fixed in 1 distros 5

Google Chrome 75.0.3770.80

debian ubuntu red hat opensuse arch linux

chromium Debian 14, Debian 13, Debian 12 75.0.3770.80-1

debian advisories DEBIAN-CVE-2019-5838

chromium-browser Ubuntu 16.04 LTS 76.0.3809.87-0ubuntu0.16.04.1
chromium-browser Ubuntu 18.04 LTS 75.0.3770.142-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-5838

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

chromium-browser RHEL 6 EXTRAS 75.0.3770.80-1.el6_10

red hat advisories RHSA-2019:1477

chromium openSUSE Tumbleweed 93.0.4577.82-1.1
chromium openSUSE Tumbleweed 113.0.5672.92-1.1
chromium Package Hub 15, Package Hub 12 SP3, openSUSE Leap 15.1 +1 more 75.0.3770.90-bp150.213.3
chromium openSUSE Leap 15.0 75.0.3770.80-lp150.215.1
chromium openSUSE Leap 15.1 75.0.3770.80-lp151.2.6.1

opensuse advisories openSUSE-SU-2024:10681-1 openSUSE-SU-2024:12948-1 openSUSE-SU-2019:1666-1 openSUSE-SU-2019:1558-1 openSUSE-SU-2019:1557-1

chromium Arch Linux 75.0.3770.80-1

arch linux advisories AVG-972

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-5838 updated 2026-06-28 cvss 4.3

chromium-browser: Overly permissive tab access in Extensions

Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 75.0.3770.80-1.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 75.0.3770.80-1.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 75.0.3770.80-1.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 75.0.3770.80-1.el6_10
fixed: vendor fix RHSA-2019:1477

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Google Chrome

Classification

Weakness

CWE-863 Incorrect Authorization

Technology feeds

Google Chrome rss critical rss

References

lists.opensuse.org /opensuse-security-announce/2019-06/msg00085.html
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/FKN4GPMBQ3SDXWB4HL45II5CZ7P2E4AI/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/CPM7VPE27DUNJLXM4F5PAAEFFWOEND6X/
vendor-advisory
debian.org /security/2019/dsa-4500
vendor-advisory
security.gentoo.org /glsa/201908-18
vendor-advisory
chromereleases.googleblog.com /2019/06/stable-channel-update-for-desktop.html
crbug.com /893087
seclists.org /bugtraq/2019/Aug/19
mailing-list

Sources

CVE List CVE-2019-5838
NVD CVE-2019-5838

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary