What is CVE-2026-10997?

CVE-2026-10997 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.5/10. Published 2026-06-04.

How severe is CVE-2026-10997?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Google Chrome

CVE-2026-10997

Insufficient policy enforcement in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to bypass discretionary access control via a crafted Chrome Extension. (Chromium security severity: Medium)

Published 2026-06-04 · last modified 2026-07-22.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.7% 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 149.0.7827.53

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html (Release Notes)
issues.chromium.org/issues/464217867 (Permissions Required)

Frequently asked questions

What is CVE-2026-10997?: CVE-2026-10997 is a medium-severity vulnerability in Google Chrome, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.5/10. Published 2026-06-04.
How severe is CVE-2026-10997?: Medium severity. CVSS v3 base score is 6.5 out of 10.