Not on CISA's list.

Chrome and Edge: incorrect authorization in Core

CVE-2026-78961 · Published 2026-08-25

How bad would it be?

4.3 out of 10

CVSS rates it medium.

How likely is it to be used?

0.3%

Estimated chance of exploitation in the next 30 days, higher than 19% of all scored flaws (EPSS, 2026-10-29).

Is it already being used?

Not confirmed

It isn't on CISA's list. That doesn't prove nobody uses it: CISA only lists exploitation it has confirmed.

What the flaw is

Incorrect authorization in Core in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

From the NVD.

Fixes and advisories

chromereleases.googleblog.comVendor Advisory

Learn this

Explore this week’s weaknesses and all learning topics

Understand the kind of weakness behind this flaw. These resources teach the weakness, rather than reproduce this specific CVE. Follow the vendor's advice above to fix the affected product.

Authorization weaknesses

The application fails to check whether this user may access a resource or perform an action.

CWE-863 · NVD record: chrome-cve-admin@google.com

Reading and practice labs · Free account for labs. Basic HTTP knowledge; some labs use Burp Suite.

Explore the labs at PortSwigger Web Security Academy How it is prevented

CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.

On SentryFeed

Chrome and Edge: incorrect authorization in CoreMicrosoft MSRC · 2026-10-28

Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.