CVE-2026-11161

chromium-browser: Insufficient data validation in DataTransfer

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

Description

Inappropriate implementation in DataTransfer 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

An unintended behavior in the DataTransfer object in Google Chrome versions before 149.0.7827.53 allows a remote attacker to leak cross‑origin data through a crafted HTML page. The flaw is a confidentiality issue and does not provide code execution or privilege escalation. The vulnerability is identified as CWE‑346. Chromium rates the severity as Medium.

Affected Systems

Any desktop installation of Google Chrome running a build older than 149.0.7827.53 is impacted. This includes Windows, macOS, and Linux deployments, which is inferred from Chrome’s widespread presence across those operating systems.

Risk and Exploitability

The EPSS score is < 1% and the vulnerability is not listed in CISA KEV, indicating a low likelihood of exploitation. The CVSS score of 4.3 reflects medium severity. The likely attack vector is a malicious web page that causes the browser to read cross‑origin data through a crafted DataTransfer object, which is then transmitted to the attacker, compromising confidentiality without code execution or privilege escalation.

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 Google Chrome to version 149.0.7827.53 or newer.
If an immediate update is not feasible, deploy a corporate policy that disables the DataTransfer API or restricts clipboard operations across origins to narrow the attack surface.
Advise users to avoid unknown or suspicious web pages and to monitor for unexpected data‑leakage behaviors.

Generated by OpenCVE AI on June 5, 2026 at 21:21 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% (0.164% 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/501920294
https://nvd.nist.gov/vuln/detail/CVE-2026-11161
https://www.cve.org/CVERecord?id=CVE-2026-11161

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. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Title	Cross-Origin Data Leakage via DataTransfer API in Google Chrome	chromium-browser: Insufficient data validation in DataTransfer
References		https://nvd.nist.gov/vuln/detail/CVE-2026-11161 https://www.cve.org/CVERecord?id=CVE-2026-11161
Metrics	threat_severity `None`	threat_severity `Moderate`

Jun 5, 2026 9:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Cross-Origin Data Leakage via DataTransfer API in Google Chrome

Jun 5, 2026 8:45 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Cross‑Origin Data Leakage via DataTransfer in Google Chrome
Weaknesses	CWE-200

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

Type	Values Removed	Values Added
Weaknesses		CWE-346
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 6:45 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 6:15 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Cross‑Origin Data Leakage via DataTransfer in Google Chrome
Weaknesses		CWE-200

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

Type	Values Removed	Values Added
Description		Inappropriate implementation in DataTransfer 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/501920294