What is CVE-2026-17888?

CVE-2026-17888 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2026-07-30.

How severe is CVE-2026-17888?

High severity. CVSS v3 base score is 7.1 out of 10.

Improper input validation in Google Chrome

CVE-2026-17888

Insufficient validation of untrusted input in WebUI in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via malicious network traffic. (Chromium security severity: Medium)

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

Published 2026-07-30 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (11.3th percentile), scored 2026-10-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Google Chrome — versions 151.0.7922.72

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/523720529 (Permissions Required)

Frequently asked questions

What is CVE-2026-17888?: CVE-2026-17888 is a high-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2026-07-30.
How severe is CVE-2026-17888?: High severity. CVSS v3 base score is 7.1 out of 10.