How severe is CVE-2026-8021?

CVE-2026-8021 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-8021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8021?

CVE-2026-8021 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8021 have an EU (EUVD) identifier?

Yes. CVE-2026-8021 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28145.

When was CVE-2026-8021 published?

CVE-2026-8021 was published on 2026-05-06 and last updated on 2026-06-17.

CVE-2026-8021

CVE-2026-8021 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 4.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28145
Weakness: CWE-94
Affected product: Google Chrome
Published: 2026-05-06
Last modified: 2026-06-17

Description

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)

Frequently asked questions

What is CVE-2026-8021?: 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)
How severe is CVE-2026-8021?: CVE-2026-8021 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-8021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8021?: CVE-2026-8021 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8021 have an EU (EUVD) identifier?: Yes. CVE-2026-8021 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28145.
When was CVE-2026-8021 published?: CVE-2026-8021 was published on 2026-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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