CVE-2026-84357

chromium-browser: chromium-browser: Improper input validation in Omnibox

Published Sep 1, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Improper input validation in Omnibox in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

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
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

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'}

Type Values Removed Values Added
Title Omnibox Input Validation Flaw Allows Origin Policy Bypass chromium-browser: chromium-browser: Improper input validation in Omnibox
Weaknesses CWE-346
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

threat_severity

Important

Type Values Removed Values Added
Title Omnibox Input Validation Flaw Allows Origin Policy Bypass
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Description Improper input validation in Omnibox in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: High)
Weaknesses CWE-20
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Sep 17, 2026, 7:05 PM
Reserved
Sep 1, 2026, 4:21 PM
Status
Analyzed
Published
Sep 2, 2026, 12:18 AM
Modified
Sep 3, 2026, 5:19 PM
Severity
Important
Public date
Sep 1, 2026, 11:42 PM