CVE-2026-19156: Heap buffer overflow in Base in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user

Q: How do I fix CVE-2026-19156?

chrome: upgrade to 151.0.7922.109. Exact commands for each OS are on this page.

Q: Is CVE-2026-19156 being exploited?

CVE-2026-19156 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-2026-19156 affect?

CVE-2026-19156 affects chrome. Severity is high (CVSS 7.5). Heap buffer overflow in Base in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severi

Routine

HIGH 7.5UPGRADE

CVE-2026-19156 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.

Heap buffer overflow in Base in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption 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	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-08-06
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

2026-08-06 22:16 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 151.0.7922.109

Fixed in: 151.0.7922.109

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 151.0.7922.109 (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.

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-2026-19156?

chrome: upgrade to 151.0.7922.109. Exact commands for each OS are on this page.

Is CVE-2026-19156 being exploited?

CVE-2026-19156 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-2026-19156 affect?

CVE-2026-19156 affects chrome. Severity is high (CVSS 7.5). Heap buffer overflow in Base in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severi

How urgent is CVE-2026-19156?

Priority 30/100. High severity

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

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References

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