What is CVE-2020-16030?

CVE-2020-16030 is a medium-severity vulnerability in Google Chrome, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-08.

How severe is CVE-2020-16030?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Google Chrome

CVE-2020-16030

Insufficient data validation in Blink in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Google Chrome — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html (Release Notes, Vendor Advisory)
crbug.com/1141350 (Permissions Required, Vendor Advisory)

Frequently asked questions

What is CVE-2020-16030?: CVE-2020-16030 is a medium-severity vulnerability in Google Chrome, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-08.
How severe is CVE-2020-16030?: Medium severity. CVSS v3 base score is 6.1 out of 10.