CVE-2026-14003

Published Jun 30, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Insufficient policy enforcement in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History
Type Values Removed Values Added
Title Insufficient Policy Enforcement in Chrome Extensions Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Policy Enforcement in Chrome Extensions Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Cross‑Origin Data Leakage via Malicious Chrome Extension
Type Values Removed Values Added
Title Cross‑Origin Data Leakage via Malicious Chrome Extension
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Flaw Leading to Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Flaw Leading to Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Extension Policy Enables Cross‑Origin Data Leakage in Chrome
Type Values Removed Values Added
Title Insufficient Extension Policy Enables Cross‑Origin Data Leakage in Chrome
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Weakness
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Weakness
Type Values Removed Values Added
Title Insufficient Policy Enforcement in Chrome Extensions Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Policy Enforcement in Chrome Extensions Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Allows Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Enforcement Allows Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Flaw Allows Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Flaw Allows Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Bypass Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Chrome Extension Policy Bypass Enables Cross‑Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Enables Cross-Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Enables Cross-Origin Data Leakage
Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Leading to Cross‑Origin Data Leakage in Google Chrome
Weaknesses CWE-200
CWE-285
Type Values Removed Values Added
Weaknesses CWE-284
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'}

Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Leading to Cross‑Origin Data Leakage in Google Chrome
Weaknesses CWE-200
CWE-285
Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Leading to Cross‑Origin Data Leak
Weaknesses CWE-284
CWE-693
Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Insufficient Extension Policy Enforcement Leading to Cross‑Origin Data Leak
Weaknesses CWE-284
CWE-693
Type Values Removed Values Added
Description Insufficient policy enforcement in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Medium)
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Jul 1, 2026, 4:05 PM
Reserved
Jun 29, 2026, 11:04 PM
Status
Analyzed
Published
Jun 30, 2026, 11:17 PM
Modified
Oct 25, 2026, 9:10 PM