What is CVE-2026-6363?

CVE-2026-6363 is a high-severity vulnerability in Google Chrome, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2026-04-15.

How severe is CVE-2026-6363?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Google Chrome

CVE-2026-6363

Type Confusion in V8 in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Medium)

Published 2026-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (26.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Google Chrome — versions 147.0.7727.101

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html (Vendor Advisory)
issues.chromium.org/issues/495751197 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-6363?: CVE-2026-6363 is a high-severity vulnerability in Google Chrome, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2026-04-15.
How severe is CVE-2026-6363?: High severity. CVSS v3 base score is 8.8 out of 10.