What is CVE-2026-79256?

CVE-2026-79256 is a high-severity vulnerability in Google Chrome, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.3/10. Published 2026-08-25.

How severe is CVE-2026-79256?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Google Chrome

CVE-2026-79256

Externally controlled reference in WebView in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Published 2026-08-25 · last modified 2026-08-28.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-10-10.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000

Affected products

Google Chrome

Weakness classification (CWE)

CWE-610 — Externally Controlled Reference to a Resource in Another Sphere

References

chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/499007248 (Permissions Required)

Frequently asked questions

What is CVE-2026-79256?: CVE-2026-79256 is a high-severity vulnerability in Google Chrome, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.3/10. Published 2026-08-25.
How severe is CVE-2026-79256?: High severity. CVSS v3 base score is 8.3 out of 10.