Description
Missing authorization in Preload in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-08-25
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Origin Policy Bypass
Action: Patch ASAP
AI Analysis

Impact

The vulnerability is a missing authorization check in the Preload functionality of Google Chrome versions earlier than 152.0.7977.65. A remote attacker can use a crafted HTML page that the browser preloads to bypass the browser’s web origin policy, allowing the attacker to request or manipulate resources that are normally protected by the same-origin restriction. This flaw is classified as CWE-862.

Affected Systems

This issue affects Google Chrome browsers on desktop operating systems across any stable channel version prior to 152.0.7977.65. Versions from older stable, beta, or dev channels are also vulnerable if the patch has not yet been applied by automatic updates.

Risk and Exploitability

The CVSS score is 4.3 and the EPSS score is less than 1 %, indicating a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires a remote attacker to deliver a crafted HTML page that utilizes the preload feature, and the risk to a system is therefore moderate and can be mitigated by applying the official patch.

Generated by OpenCVE AI on August 28, 2026 at 19:47 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Google Chrome to version 152.0.7977.65 or later, which adds the missing authorization check.
  • If an update is not immediately available, disable the Preload functionality by changing the appropriate Chrome setting or flag to prevent the vulnerability from being exercised.
  • Ensure automatic updates are enabled and monitor Chrome release notes for any additional security updates related to this issue.

Generated by OpenCVE AI on August 28, 2026 at 19:47 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4771-1 chromium security update
Debian DSA Debian DSA DSA-6482-1 chromium security update
History

Mon, 31 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

Sat, 29 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 28 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
Title Google Chrome Origin Policy Bypass via Preload Feature

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

Wed, 26 Aug 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Tue, 25 Aug 2026 23:45:00 +0000

Type Values Removed Values Added
Title Google Chrome Origin Policy Bypass via Preload Feature

Tue, 25 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Description Missing authorization in Preload in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-862
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-08-27T19:36:34.599Z

Reserved: 2026-08-25T06:09:42.536Z

Link: CVE-2026-79110

cve-icon Vulnrichment

Updated: 2026-08-27T19:28:47.588Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-25T21:18:06.320

Modified: 2026-08-31T16:53:44.557

Link: CVE-2026-79110

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T20:00:16Z

Weaknesses