CVE-2026-11162

chromium-browser: Insufficient policy enforcement in CSS

Published Jun 4, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Description

Inappropriate implementation in CSS in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Analysis

Technical impact

The vulnerability arises from an improper handling of CSS in Chrome versions prior to 149.0.7827.53, allowing a remote attacker, via a crafted HTML page, to exfiltrate cross‑origin data. The flaw enables disclosure of information that should be protected by same‑origin enforcement, potentially exposing confidential data without privilege escalation.

Affected Systems

Google Chrome users using any version before 149.0.7827.53 are affected; no sub‑product or specific patch list beyond the last non‑patched version is provided. The issue targets the standard desktop Chrome browser across all platforms.

Risk and Exploitability

The CVSS score of 4.3 indicates medium severity, and the EPSS score below 1% suggests a low exploitation likelihood. The flaw is not listed in the CISA KEV catalog. Attackers would need to host or trigger a malicious page that the victim visits, then exploit the CSS bug to read data from another origin; no elevated privileges are required, making the risk broad for end‑users.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Google

Chrome

affected

Version	Status	Constraints
`149.0.7827.53`	affected	< 149.0.7827.53

Configuration 1 [-]

AND

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

No data.

Vendor Product Versions

Google

Chrome

Version	Status	Scheme	Platform
`[149.0.7827.53,149.0.7827.53)`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade Chrome to version 149.0.7827.53 or later
Enable automatic updates so the browser receives security patches promptly
Apply a content security policy or enterprise policy that blocks loading of external CSS to reduce the attack surface and verify same‑origin enforcement remains intact

Generated by OpenCVE AI on June 7, 2026 at 16:01 UTC.

Tracking

Advisories

Source	ID	Title
Debian DSA	DSA-6325-1	chromium security update

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.202% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/502035074
https://nvd.nist.gov/vuln/detail/CVE-2026-11162
https://www.cve.org/CVERecord?id=CVE-2026-11162

History

Jun 8, 2026 2:45 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Apple Apple macos Linux Linux linux Kernel Microsoft Microsoft windows
CPEs		cpe:2.3:a:google:chrome:::::::: cpe:2.3:o:apple:macos:-:::::::* cpe:2.3:o:linux:linux_kernel:-:::::::* cpe:2.3:o:microsoft:windows:-:::::::*
Vendors & Products		Apple Apple macos Linux Linux linux Kernel Microsoft Microsoft windows

Jun 7, 2026 12:15 PM Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Title	Chrome CSS Exploit Enables Cross‑Origin Data Leakage	chromium-browser: Insufficient policy enforcement in CSS
Weaknesses		CWE-346
References		https://nvd.nist.gov/vuln/detail/CVE-2026-11162 https://www.cve.org/CVERecord?id=CVE-2026-11162
Metrics	threat_severity `None`	threat_severity `Moderate`

Jun 5, 2026 10:15 PM Title updated View changes

Type	Values Removed	Values Added
Title		Chrome CSS Exploit Enables Cross‑Origin Data Leakage

Jun 5, 2026 8:15 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Cross-Origin Data Leak via CSS in Google Chrome
Weaknesses	CWE-602

Jun 5, 2026 6:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jun 5, 2026 6:15 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Google Google chrome
Vendors & Products		Google Google chrome

Jun 5, 2026 5:15 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Cross-Origin Data Leak via CSS in Google Chrome
Weaknesses		CWE-200 CWE-602

Jun 4, 2026 11:15 PM Description updated. Added references View changes

Type	Values Removed	Values Added
Description		Inappropriate implementation in CSS in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
References		https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html https://issues.chromium.org/issues/502035074