What is CVE-2026-113249?

CVE-2026-113249 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-10-20.

How severe is CVE-2026-113249?

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

Improper input validation in Google Chrome

CVE-2026-113249

Improper input validation in Mobile in Google Chrome on on iOS prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-10-20 · last modified 2026-10-22.

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 (32.0th percentile), scored 2026-10-22.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Google Chrome

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_0201866… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/513480110 (Exploit, Mitigation, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-113249?: CVE-2026-113249 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-10-20.
How severe is CVE-2026-113249?: High severity. CVSS v3 base score is 8.8 out of 10.