Use after free in Extensions in Google Chrome prior to 116.0.5845.96 allowed an attacker who convinced a user to install a malicious extens…

published 2023-08-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54230

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

Use after free in Extensions in Google Chrome prior to 116.0.5845.96 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Patch / fix

fixed in 1 distros 2

google chrome 116.0.5845.96

debian opensuse

chromium Debian 12 116.0.5845.96-1~deb12u1
chromium Debian 14, Debian 13 116.0.5845.96-1

debian advisories DEBIAN-CVE-2023-4366

chromium openSUSE Tumbleweed 116.0.5845.96-1.1
opera openSUSE Leap 15.4 NonFree 102.0.4880.40-lp154.2.50.1
chromium Package Hub 15 SP5, Package Hub 15 SP4, openSUSE Leap 15.5 +1 more 116.0.5845.96-bp155.2.19.1

opensuse advisories openSUSE-SU-2024:13139-1 openSUSE-SU-2024:13144-1 openSUSE-SU-2023:0251-1 openSUSE-SU-2023:0234-1

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-2023-4366 updated 2026-01-13 cvss 6.5

chromium-browser: Use after free in Extensions

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

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

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Google Chrome

Classification

Weakness

CWE-416 Use After Free

Technology feeds

Google Chrome rss critical rss

References

chromereleases.googleblog.com /2023/08/stable-channel-update-for-desktop_15.html
release-notes, vendor-advisory
crbug.com /1450784
permissions-required
debian.org /security/2023/dsa-5479
third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/OCFEK63FUHFXZH5MSG6TNQOXMQWM4M5S/
mailing-list, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/2DMXHPRUGBUDNHZCZCIVMWAUIEXEGMGT/
security.gentoo.org /glsa/202401-34

Sources

CVE List CVE-2023-4366
NVD CVE-2023-4366

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