CVE-2026-19558: Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user

Q: How do I fix CVE-2026-19558?

chrome: upgrade to 151.0.7922.137. Exact commands for each OS are on this page.

Q: Is CVE-2026-19558 being exploited?

CVE-2026-19558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-19558 affect?

CVE-2026-19558 affects chrome. Severity is high (CVSS 7.5). Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security se

Routine

HIGH 7.5UPGRADE

CVE-2026-19558 is a high-severity flaw (CVSS 7.5) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-08-11
Last modified	2026-10-23

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 22:17 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 151.0.7922.137

Fixed in: 151.0.7922.137

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. UPGRADE to 151.0.7922.137 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chrome

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chrome

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source

sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3

Ubuntu 22.04 · chromium-browser · NOT AFFECTED

Ubuntu 24.04 · chromium-browser · NOT AFFECTED

Debian 12 · chromium · FIXED · 151.0.7922.137-1~deb12u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "151.0.7922.137-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · chromium · FIXED · 151.0.7922.137-1~deb13u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "151.0.7922.137-1~deb13u1" && echo PATCHED || echo STILL-VULNERABLE

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: issues.chromium.org/issues/536676756

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-19558?

chrome: upgrade to 151.0.7922.137. Exact commands for each OS are on this page.

Is CVE-2026-19558 being exploited?

CVE-2026-19558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-19558 affect?

CVE-2026-19558 affects chrome. Severity is high (CVSS 7.5). Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security se

How urgent is CVE-2026-19558?

Priority 31/100. High severity

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

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References

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