CVE-2026-121050

chromium-browser: Race condition in Mobile

Published Nov 3, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Race condition in Mobile in Google Chrome on on iOS prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
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
Type Values Removed Values Added
Title chromium-browser: Race condition in Mobile
References
Metrics threat_severity

None

threat_severity

Low

Type Values Removed Values Added
Title Chromium Mobile iOS Race Condition Enables Same‑Origin Policy Bypass
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'}

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Chromium Mobile iOS Race Condition Enables Same‑Origin Policy Bypass
Type Values Removed Values Added
Description Race condition in Mobile in Google Chrome on on iOS prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
Weaknesses CWE-367
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Nov 4, 2026, 8:21 PM
Reserved
Nov 3, 2026, 9:23 AM
Status
Analyzed
Published
Nov 3, 2026, 9:17 PM
Modified
Nov 5, 2026, 4:29 PM
Severity
Low
Public date
Nov 3, 2026, 8:42 PM