---
id: CVE-2026-79191
title: >-
  chromium-browser: chromium-browser: Incorrect authorization in SiteIsolation
  (CVE-2026-79191)
summary: >-
  An incorrect authorization flaw was found in the SiteIsolation component of
  the Chromium browser.


  Upstream bug(s):


  https://code.google.com/p/chromium/issues/detail?id=517606780
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
cvssSource: vendor
cwe:
  - CWE-863
vendor: Red Hat
product: Chrome
affected:
  - Chrome >= 152.0.7977.65 < 152.0.7977.65
published: '2026-08-25'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T02:20:04+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79191.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79191.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-79191'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-79191'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79191'
  - url: >-
      https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html
  - url: 'https://issues.chromium.org/issues/517606780'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00231
epssPercentile: 0.12503
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-27T19:03:15.606544Z'
scores:
  vendor: 7.6
  adp: 3.1
ingestedAt: '2026-09-17T19:26:25.331Z'
---

## Overview

An incorrect authorization flaw was found in the SiteIsolation component of the Chromium browser.

Upstream bug(s):

https://code.google.com/p/chromium/issues/detail?id=517606780

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79191.json)

**chromium-browser: chromium-browser: Incorrect authorization in SiteIsolation**. Released 2026-08-25, updated 2026-09-26.

Not affected:

- All currently supported Red Hat products

## Remediation

Refer to the advisory for fix availability.