Description
Protection mechanism failure in Mobile in Google Chrome on on iOS prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-10-06
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Web origin policy circumvention
Action: Update
AI Analysis

Impact

A protection mechanism failure in Google Chrome for iOS before version 155.0.8059.39 allows a remote attacker to bypass the web origin policy through a crafted HTML page. This weakness, identified as CWE‑693, permits data from one origin to be accessed by a malicious origin, potentially leaking confidential information or enabling unauthorized script execution.

Affected Systems

Google Chrome mobile on iOS, versions older than 155.0.8059.39.

Risk and Exploitability

The vulnerability is evaluated as Medium severity, reflected by a CVSS score of 6.5. The EPSS score is not available and the flaw is not listed in the CISA KEV catalog. Exploitation likely requires the victim to open a malicious HTML page in the vulnerable Chrome installation, making it a remote attack vector that can be triggered via the web. The overall risk is moderate, with typical impact limited to data integrity and confidentiality rather than system compromise.

Generated by OpenCVE AI on October 7, 2026 at 13:30 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome on iOS to 155.0.8059.39 or later
  • Avoid browsing untrusted web pages until the update is applied
  • For managed devices, enforce a minimum Chrome version policy to prevent use of vulnerable releases

Generated by OpenCVE AI on October 7, 2026 at 13:30 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4833-1 chromium security update
Debian DSA Debian DSA DSA-6553-1 chromium security update
History

Fri, 09 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple iphone Os
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple iphone Os

Thu, 08 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

 ssvc

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

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}

Wed, 07 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Origin Policy Bypass via Crafted HTML in Google Chrome iOS chromium-browser: Protection mechanism failure in Mobile
References
Metrics threat_severity

None

 cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

threat_severity

Moderate

Wed, 07 Oct 2026 05:15:00 +0000

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

Wed, 07 Oct 2026 01:45:00 +0000

Type Values Removed Values Added
Title Origin Policy Bypass via Crafted HTML in Google Chrome iOS

Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Protection mechanism failure in Mobile in Google Chrome on on iOS prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-693
References

Subscriptions

Apple Iphone Os
Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-10-08T16:42:00.054Z

Reserved: 2026-10-06T16:38:16.678Z

Link: CVE-2026-106408

cve-icon Vulnrichment

Updated: 2026-10-08T16:41:33.748Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T19:18:10.413

Modified: 2026-10-09T14:26:20.550

Link: CVE-2026-106408

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-06T18:41:20Z

Links: CVE-2026-106408 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T13:45:06Z

Weaknesses
  • CWE-693

    Protection Mechanism Failure