CVE-2026-13838

CSS Parsing Bypass Enabling Same Origin Policy Escalation in Google Chrome

Published Jun 30, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Inappropriate implementation in CSS in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy 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 DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History
Type Values Removed Values Added
Title CSS Parsing Bypass Enabling Same Origin Policy Escalation in Google Chrome
Type Values Removed Values Added
Title Same-Origin Policy Bypass via CSS Parsing Vulnerability in Google Chrome
Type Values Removed Values Added
Title Same-Origin Policy Bypass via CSS Parsing Vulnerability in Google Chrome
Type Values Removed Values Added
Title Same‑Origin Policy Bypass via CSS Parsing Flaw in Google Chrome
Type Values Removed Values Added
Title Same‑Origin Policy Bypass via CSS Parsing Flaw in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via CSS Parsing in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via CSS Parsing in Google Chrome
Type Values Removed Values Added
Title Chrome CSS Same Origin Policy Bypass Vulnerability
Type Values Removed Values Added
Title Chrome CSS Same Origin Policy Bypass Vulnerability
Type Values Removed Values Added
Title Chrome CSS Parsing Vulnerability Allows Same-Origin Policy Bypass
Type Values Removed Values Added
Title Chrome CSS Parsing Vulnerability Allows Same-Origin Policy Bypass
Type Values Removed Values Added
Title Chrome CSS Same-Origin Policy Bypass Prior to 150.0.7871.47
Type Values Removed Values Added
Title Chrome CSS Same-Origin Policy Bypass Prior to 150.0.7871.47
Type Values Removed Values Added
Title Chrome CSS Parsing Vulnerability Enables Same-Origin Policy Bypass
Type Values Removed Values Added
Title Chrome CSS Parsing Vulnerability Enables Same-Origin Policy Bypass
Type Values Removed Values Added
Title CSS Parsing Vulnerability Enables Same Origin Policy Bypass
Type Values Removed Values Added
Title CSS Parsing Vulnerability Enables Same Origin Policy Bypass
Type Values Removed Values Added
Title Chrome Same Origin Policy Bypass via CSS Parsing Flaw
Type Values Removed Values Added
Title Chrome Same Origin Policy Bypass via CSS Parsing Flaw
Type Values Removed Values Added
Title CSS Parsing Flaw Enables Same Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title CSS Parsing Flaw Enables Same Origin Policy Bypass in Google Chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via Improper CSS Handling in Google Chrome
Weaknesses CWE-284
Type Values Removed Values Added
Weaknesses CWE-346
Metrics 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'}

ssvc

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

Type Values Removed Values Added
Title Same Origin Policy Bypass via Improper CSS Handling in Google Chrome
Weaknesses CWE-284
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Same Origin Policy Bypass via CSS in Chrome
Weaknesses CWE-601
CWE-79
Type Values Removed Values Added
Title Same Origin Policy Bypass via CSS in Chrome
Weaknesses CWE-601
CWE-79
Type Values Removed Values Added
Description Inappropriate implementation in CSS in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: High)
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jul 1, 2026, 3:16 PM
Reserved
Jun 29, 2026, 11:03 PM
Status
Analyzed
Published
Jun 30, 2026, 11:16 PM
Modified
Oct 25, 2026, 9:10 PM