Description
Confused deputy in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-11-03
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Wed, 04 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

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

Tue, 03 Nov 2026 22:30:00 +0000

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

Tue, 03 Nov 2026 22:15:00 +0000

Type Values Removed Values Added
Title Confused Deputy in Chrome BackgroundFetch Enabling Potential Web Origin Policy Bypass

Tue, 03 Nov 2026 20:45:00 +0000

Type Values Removed Values Added
Description Confused deputy in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-441
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-04T20:21:08.555Z

Reserved: 2026-11-03T09:30:16.674Z

Link: CVE-2026-121108

cve-icon Vulnrichment

Updated: 2026-11-04T20:17:27.601Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-11-03T21:17:17.247

Modified: 2026-11-04T21:17:59.620

Link: CVE-2026-121108

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T22:15:02Z

Weaknesses