Description
Inappropriate implementation in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Medium)
Published: 2026-05-14
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An inappropriate implementation in the Downloads component of Google Chrome on macOS allows an attacker to convince a user to install a malicious extension, which can then perform UI spoofing. The flaw enables the attacker to manipulate the user interface to mislead the user into unintended actions. This vulnerability is typified by weaknesses such as deceptive UI components (CWE‑451).

Affected Systems

Google Chrome running on macOS versions prior to 148.0.7778.168 is affected. The vulnerability exists in the Downloads feature and can be exploited through any Chrome extension installed on these versions.

Risk and Exploitability

The CVSS score of 4.7 indicates a medium severity vulnerability, and no EPSS score is available. The vulnerability is not listed in the CISA KEV catalog, suggesting it has not been observed in active exploitation. Exploitation requires social engineering to persuade the user to install a malicious extension, so the attack requires user interaction and is not remotely automated. The overall risk is moderate given the need for user action but still potentially significant because of the deceptive UI component.

Generated by OpenCVE AI on May 15, 2026 at 14:06 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Chrome stable channel update to version 148.0.7778.168 or later
  • Remove any untrusted or newly installed extensions that are not verified by Google
  • Configure Chrome extension management policies to restrict or block installations from unknown sources

Generated by OpenCVE AI on May 15, 2026 at 14:06 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DSA Debian DSA DSA-6273-1 chromium security update
History

Fri, 15 May 2026 12:15:00 +0000

Type Values Removed Values Added
Title chromium-browser: chromium-browser: Inappropriate implementation in Downloads
Weaknesses CWE-1021
References
Metrics threat_severity

None

 threat_severity

Moderate

Fri, 15 May 2026 01:30:00 +0000

Type Values Removed Values Added
Title UI Spoofing via Malicious Extension in Chrome on Mac
Weaknesses CWE-1021
CWE-1033

Thu, 14 May 2026 22:30:00 +0000

Type Values Removed Values Added
Title UI Spoofing via Malicious Extension in Chrome on Mac
Weaknesses CWE-1021
CWE-1033

Thu, 14 May 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Weaknesses CWE-451
Vendors & Products Google
Google chrome
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:L'}

ssvc

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

Thu, 14 May 2026 20:15:00 +0000

Type Values Removed Values Added
Description Inappropriate implementation in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Medium)
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-05-14T21:24:48.778Z

Reserved: 2026-05-14T05:40:23.318Z

Link: CVE-2026-8565

cve-icon Vulnrichment

Updated: 2026-05-14T21:24:41.126Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-14T20:17:18.663

Modified: 2026-05-14T22:16:49.997

Link: CVE-2026-8565

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-14T19:52:31Z

Links: CVE-2026-8565 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T14:15:51Z

Weaknesses