CVE-2026-106425

chromium-browser: Missing authorization in BrowserTag

Published Oct 6, 2026 CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
Description
Missing authorization in BrowserTag in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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

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

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'}

cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

Type Values Removed Values Added
Title Missing Authorization in Chrome BrowserTag Enables Remote Attack Bypassing Site Isolation chromium-browser: Missing authorization in BrowserTag
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

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Missing Authorization in Chrome BrowserTag Enables Remote Attack Bypassing Site Isolation
Type Values Removed Values Added
Description Missing authorization in BrowserTag in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-862
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Oct 11, 2026, 4:56 PM
Reserved
Oct 6, 2026, 4:38 PM
Status
Analyzed
Published
Oct 6, 2026, 7:18 PM
Modified
Oct 13, 2026, 7:16 PM
Severity
Moderate
Public date
Oct 6, 2026, 6:41 PM