CVE-2026-13838 - Vulnerability Details

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)

Published: 2026-06-30

Score: 6.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

Chrome before 150.0.7871.47 contains a CSS parsing flaw that allows a remote attacker to craft an HTML page that bypasses the browser’s same‑origin policy, enabling the read or modification of data from a different origin that would normally be protected. This flaw is identified as CWE‑346. The vulnerability can lead to leakage of confidential information or alteration of web content.

Affected Systems

All users operating Google Chrome versions prior to 150.0.7871.47 are affected; the fix is delivered in that version and later releases.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate severity, while the EPSS score of less than 1% reflects a very low exploitation likelihood. The flaw is not listed in CISA’s KEV catalog. Exploitation requires a victim to open a malicious HTML page, likely through a web site or email, and would result in cross‑origin data exfiltration or manipulation if successful.

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
`150.0.7871.47`	affected	< 150.0.7871.47

No data.

Vendor Product Confidence Versions

Google

Chrome

100%

Version	Status	Scheme	Platform
`[150.0.7871.47,150.0.7871.47)`	affected	generic	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Update Chrome to version 150.0.7871.47 or later to apply the CSS parsing patch identified as CWE‑346.
Enable automatic browser updates to receive security fixes as soon as they are issued.
Use network controls, such as firewalls or content filters, to block or quarantine traffic to domains that have been detected serving malicious or compromised web content.

Generated by OpenCVE AI on August 2, 2026 at 00:55 UTC.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-4672-1	chromium security update
Debian DSA	DSA-6378-1	chromium security update

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00224.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html
https://issues.chromium.org/issues/514445398

History

Sun, 02 Aug 2026 01:15:00 +0000

Type	Values Removed	Values Added
Title		CSS Parsing Bypass Enabling Same Origin Policy Escalation in Google Chrome

Tue, 28 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Title	Same-Origin Policy Bypass via CSS Parsing Vulnerability in Google Chrome

Fri, 24 Jul 2026 18:30:00 +0000

Type	Values Removed	Values Added
Title		Same-Origin Policy Bypass via CSS Parsing Vulnerability in Google Chrome

Tue, 21 Jul 2026 17:45:00 +0000

Type	Values Removed	Values Added
Title	Same‑Origin Policy Bypass via CSS Parsing Flaw in Google Chrome

Thu, 16 Jul 2026 13:00:00 +0000

Type	Values Removed	Values Added
Title		Same‑Origin Policy Bypass via CSS Parsing Flaw in Google Chrome

Tue, 14 Jul 2026 12:15:00 +0000

Type	Values Removed	Values Added
Title	Same Origin Policy Bypass via CSS Parsing in Google Chrome

Sun, 12 Jul 2026 21:45:00 +0000

Type	Values Removed	Values Added
Title		Same Origin Policy Bypass via CSS Parsing in Google Chrome

Sun, 12 Jul 2026 03:15:00 +0000

Type	Values Removed	Values Added
Title	Chrome CSS Same Origin Policy Bypass Vulnerability

Fri, 10 Jul 2026 04:30:00 +0000

Type	Values Removed	Values Added
Title		Chrome CSS Same Origin Policy Bypass Vulnerability

Wed, 08 Jul 2026 20:30:00 +0000

Type	Values Removed	Values Added
Title	Chrome CSS Parsing Vulnerability Allows Same-Origin Policy Bypass

Tue, 07 Jul 2026 22:15:00 +0000

Type	Values Removed	Values Added
Title		Chrome CSS Parsing Vulnerability Allows Same-Origin Policy Bypass

Mon, 06 Jul 2026 21:00:00 +0000

Type	Values Removed	Values Added
Title	Chrome CSS Same-Origin Policy Bypass Prior to 150.0.7871.47

Mon, 06 Jul 2026 04:00:00 +0000

Type	Values Removed	Values Added
Title		Chrome CSS Same-Origin Policy Bypass Prior to 150.0.7871.47

Sun, 05 Jul 2026 12:00:00 +0000

Type	Values Removed	Values Added
Title	Chrome CSS Parsing Vulnerability Enables Same-Origin Policy Bypass

Sat, 04 Jul 2026 16:00:00 +0000

Type	Values Removed	Values Added
Title		Chrome CSS Parsing Vulnerability Enables Same-Origin Policy Bypass

Fri, 03 Jul 2026 20:30:00 +0000

Type	Values Removed	Values Added
Title	CSS Parsing Vulnerability Enables Same Origin Policy Bypass

Fri, 03 Jul 2026 09:30:00 +0000

Type	Values Removed	Values Added
Title		CSS Parsing Vulnerability Enables Same Origin Policy Bypass

Fri, 03 Jul 2026 03:00:00 +0000

Type	Values Removed	Values Added
Title	Chrome Same Origin Policy Bypass via CSS Parsing Flaw

Thu, 02 Jul 2026 20:15:00 +0000

Type	Values Removed	Values Added
Title		Chrome Same Origin Policy Bypass via CSS Parsing Flaw

Thu, 02 Jul 2026 12:00:00 +0000

Type	Values Removed	Values Added
Title	CSS Parsing Flaw Enables Same Origin Policy Bypass in Google Chrome

Thu, 02 Jul 2026 05:00:00 +0000

Type	Values Removed	Values Added
Title		CSS Parsing Flaw Enables Same Origin Policy Bypass in Google Chrome

Wed, 01 Jul 2026 22:45:00 +0000

Type	Values Removed	Values Added
Title	Same Origin Policy Bypass via Improper CSS Handling in Google Chrome
Weaknesses	CWE-284

Wed, 01 Jul 2026 16:30:00 +0000

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'}`

Wed, 01 Jul 2026 14:45:00 +0000

Type	Values Removed	Values Added
Title		Same Origin Policy Bypass via Improper CSS Handling in Google Chrome
Weaknesses		CWE-284

Wed, 01 Jul 2026 12:30:00 +0000

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

Wed, 01 Jul 2026 11:00:00 +0000

Type	Values Removed	Values Added
Title	Same Origin Policy Bypass via CSS in Chrome
Weaknesses	CWE-601 CWE-79

Wed, 01 Jul 2026 01:00:00 +0000

Type	Values Removed	Values Added
Title		Same Origin Policy Bypass via CSS in Chrome
Weaknesses		CWE-601 CWE-79

Tue, 30 Jun 2026 23:15:00 +0000

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		https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html https://issues.chromium.org/issues/514445398

Subscriptions

Google Chrome

MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2026-06-30T22:37:51.806Z

Updated: 2026-07-01T15:16:34.383Z

Reserved: 2026-06-29T23:03:30.247Z

Link: CVE-2026-13838

Vulnrichment

Updated: 2026-07-01T15:16:26.591Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-02T01:00:05Z

Weaknesses

CWE-346
Origin Validation Error

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object