CVE-2026-8021: Script injection in UI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who convinced a user

Q: How do I fix CVE-2026-8021?

chrome: upgrade to 148.0.7778.96. Exact commands for each OS are on this page.

Q: Is CVE-2026-8021 being exploited?

CVE-2026-8021 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-2026-8021 affect?

CVE-2026-8021 affects chrome. Severity is medium (CVSS 4.2). Script injection in UI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity:

Q: How urgent is CVE-2026-8021?

Priority 16/100. No elevated risk signals yet.

Routine

MEDIUM 4.2UPGRADE

CVE-2026-8021 is a medium-severity flaw (CVSS 4.2) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Script injection in UI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Low)

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.2 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-05-06
Last modified	2026-10-26

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-06 19:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 148.0.7778.96

Fixed in: 148.0.7778.96

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 148.0.7778.96 (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-2026-8021?

chrome: upgrade to 148.0.7778.96. Exact commands for each OS are on this page.

Is CVE-2026-8021 being exploited?

CVE-2026-8021 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-2026-8021 affect?

CVE-2026-8021 affects chrome. Severity is medium (CVSS 4.2). Script injection in UI in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who convinced a user to engage in specific UI gestures to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity:

How urgent is CVE-2026-8021?

Priority 16/100. No elevated risk signals yet.

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

Related CVEs

CVE-2026-0628 HIGH 8.8 UPGRADE Insufficient policy enforcement in WebView tag in Google Chrome prior to 143.0.7499.192 allowed an attacker wh
CVE-2026-5285 HIGH 8.8 UPGRADE Use after free in WebGL in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrar
CVE-2026-6315 HIGH 8.8 UPGRADE Use after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker wh
CVE-2026-6363 HIGH 8.8 UPGRADE Type Confusion in V8 in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially perform
CVE-2026-6311 HIGH 8.3 UPGRADE Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attack

References

← Back to latest CVEs