CVE-2026-11020 Cross-site scripting in Chrome

What is CVE-2026-11020?

CVE-2026-11020 is a medium-severity cross-site scripting vulnerability in Google Chrome, published on 4 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted XML file. (Chromium security severity: Medium)

Weakness: CWE-352, CWE-346

Which versions are affected by CVE-2026-11020?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-11020?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-11020 being exploited?

There is no known exploitation of CVE-2026-11020 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-11020, ECHO-2656-faa7-1f8a, GHSA-hjpv-wxpg-mvhc, MINI-qj32-8r5j-wrmg.