Description
Incorrect authorization in Media in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-10-06
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unequal Authorization leading to Cross-Origin Data Leak
Action: Patch Now
AI Analysis

Impact

Chrome prior to version 155.0.8059.39 had incorrect authorization handling in the Media component, allowing a malicious HTML page to trick the browser into exposing cross-origin data. The flaw permits a remote attacker to read data from other origins, leaking potentially sensitive content. The weakness is CWE‑863 (Incorrect Authorization).

Affected Systems

Affected are Google Chrome browsers older than 155.0.8059.39 on any platform, including Windows, macOS, Linux, and Android.

Risk and Exploitability

The vulnerability is exploitable remotely via a crafted HTML page in a web environment. No EPSS data is available and it is not listed in the KEV catalog, but the CVSS score of 4.3 indicates a moderate risk. Attackers likely require a page load or user interaction that triggers media handling, limiting the attack surface to sites that manage media content and rely on Chrome's Media API.

Generated by OpenCVE AI on October 7, 2026 at 01:22 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to Chrome 155.0.8059.39 or newer.
  • Configure enterprise policy to restrict cross-origin media sharing or disable third-party media usage.
  • Monitor Chrome update channels and apply future security patches promptly.

Generated by OpenCVE AI on October 7, 2026 at 01:22 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4833-1 chromium security update
Debian DSA Debian DSA DSA-6553-1 chromium security update
History

Sat, 10 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Title Google Chrome Cross-Origin Data Leak via Media Authorization Flaw chromium-browser: Incorrect authorization in Media
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 07 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

Wed, 07 Oct 2026 03:45:00 +0000

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

Wed, 07 Oct 2026 01:45:00 +0000

Type Values Removed Values Added
Title Google Chrome Cross-Origin Data Leak via Media Authorization Flaw

Tue, 06 Oct 2026 22:30:00 +0000

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'}

Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in Media in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-863
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-10-06T21:16:15.675Z

Reserved: 2026-10-06T16:38:05.414Z

Link: CVE-2026-106398

cve-icon Vulnrichment

Updated: 2026-10-06T21:11:13.791Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T19:18:09.270

Modified: 2026-10-07T13:40:47.383

Link: CVE-2026-106398

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-06T18:41:30Z

Links: CVE-2026-106398 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T03:30:10Z

Weaknesses