CVE-2026-8536

chromium-browser: chromium-browser: Insufficient validation of untrusted input in ReadingMode

Published May 14, 2026 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
Insufficient validation of untrusted input in ReadingMode in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to bypass site Isolation via a crafted HTML page. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6273-1 chromium security update
History
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}

ssvc

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

cvssV3_1

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

Type Values Removed Values Added
Title Insufficient Input Validation in Chrome ReadingMode Enables Site Isolation Bypass chromium-browser: chromium-browser: Insufficient validation of untrusted input in ReadingMode
Weaknesses CWE-1289
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N'}

threat_severity

Important

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Insufficient Input Validation in Chrome ReadingMode Enables Site Isolation Bypass
Type Values Removed Values Added
Description Insufficient validation of untrusted input in ReadingMode in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to bypass site Isolation via a crafted HTML page. (Chromium security severity: High)
Weaknesses CWE-20
References

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
May 15, 2026, 1:55 PM
Reserved
May 14, 2026, 5:40 AM
Status
Analyzed
Published
May 14, 2026, 8:17 PM
Modified
Oct 26, 2026, 2:10 PM
Severity
Important
Public date
May 14, 2026, 7:52 PM