What is CVE-2026-91726?

CVE-2026-91726 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.7/10. Published 2026-09-15.

How severe is CVE-2026-91726?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Out-of-bounds Read in Google Chrome

CVE-2026-91726

Out of bounds read in WebGL in Google Chrome on on Android prior to 153.0.8010.47 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

Vulnerability class: Buffer Overflow

Published 2026-09-15 · last modified 2026-09-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.2th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% 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: 0.003 · change: 0.000

Affected products

Google Chrome

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0541751… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/556870863 (Permissions Required)

Frequently asked questions

What is CVE-2026-91726?: CVE-2026-91726 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Read. CVSS score: 4.7/10. Published 2026-09-15.
How severe is CVE-2026-91726?: Medium severity. CVSS v3 base score is 4.7 out of 10.