CVE-2026-8587

chromium-browser: chromium-browser: Use after free in Extensions

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Published May 14, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Use after free in Extensions in Google Chrome on Mac prior to 148.0.7778.168 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Medium)

Analysis

AI-generated

Technical impact

A use‑after‑free flaw exists in the handling of Chrome extensions on macOS for versions prior to 148.0.7778.168. The defect allows an attacker who persuades a user to install a malicious extension to trigger a memory access after an object has been freed, resulting in arbitrary code execution. The weakness is classified as CWE‑416 and CWE‑825 and is rated medium severity by Chromium’s internal scoring system.

Affected Systems

Google Chrome for macOS is affected. Any installation of Chrome earlier than version 148.0.7778.168 is vulnerable, regardless of minor patch level.

Risk and Exploitability

The EPSS score is <1% and the vulnerability is not listed in CISA’s KEV catalog, indicating no known widespread exploitation. However, the flaw permits remote code execution once a user installs a malicious extension, so the attack requires user cooperation or deception. The intrinsic severity is high, but the impact of arbitrary code execution could be significant, warranting immediate attention.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update Chrome to a version newer than 148.0.7778.168 via the official update channel
  • Remove any suspicious or untrusted extensions from the browser
  • Configure Chrome to restrict extensions to only those from the Chrome Web Store

Generated by OpenCVE AI on May 15, 2026 at 14:50 UTC.

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6273-1 chromium security update
History
Type Values Removed Values Added
First Time appeared Apple
Apple macos
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Title Use‑after‑Free in Chrome Extensions Allows Arbitrary Code Execution on macOS chromium-browser: chromium-browser: Use after free in Extensions
Weaknesses CWE-825
References
Metrics threat_severity

None

 threat_severity

Moderate
Type Values Removed Values Added
Title Use‑after‑Free in Chrome Extensions Allows Arbitrary Code Execution on macOS
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
Description Use after free in Extensions in Google Chrome on Mac prior to 148.0.7778.168 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension. (Chromium security severity: Medium)
Weaknesses CWE-416
References
Earlier changes (1)
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
May 15, 2026, 3:56 AM
Reserved
May 14, 2026, 5:40 AM

View source JSON

Updated
May 14, 2026, 8:35 PM

JSON

Status
Analyzed
Published
May 14, 2026, 8:17 PM
Modified
Oct 26, 2026, 2:10 PM

View source JSON

Severity
Moderate
Public date
May 14, 2026, 7:52 PM

View source Bugzilla JSON

Updated
May 15, 2026, 3:00 PM

JSON