CVE-2026-14081: Chrome DevTools Information Disclosure Bug

CVE-2026-14081 Overview

CVE-2026-14081 is an information disclosure vulnerability in the DevTools component of Google Chrome versions prior to 150.0.7871.47. The flaw stems from insufficient policy enforcement, which permits a malicious Chrome extension to read potentially sensitive information from process memory. Exploitation requires an attacker to convince a user to install a crafted extension, so user interaction is a prerequisite. Google classifies the Chromium security severity as Low, while NVD scores the issue as medium-impact due to network attack vector and high confidentiality impact. The vulnerability is tracked under [CWE-602] Client-Side Enforcement of Server-Side Security.

Critical Impact
A malicious Chrome extension can extract sensitive data from Chrome process memory via crafted DevTools interactions, exposing credentials, tokens, or browsing artifacts held in memory.

Affected Products

Google Chrome versions prior to 150.0.7871.47
Chrome on Apple macOS, Microsoft Windows, and Linux desktop platforms
Environments permitting installation of third-party Chrome extensions

Discovery Timeline

2026-06-30 - CVE-2026-14081 published to NVD
2026-07-01 - Last updated in NVD database

Technical Details for CVE-2026-14081

Vulnerability Analysis

The vulnerability resides in Chrome DevTools, the built-in developer tooling exposed to extensions through the chrome.devtools.* extension APIs. DevTools did not sufficiently enforce policy boundaries between an extension's DevTools context and the underlying browser process memory. A crafted extension can therefore issue DevTools calls that return data beyond what the extension permission model should authorize. The result is disclosure of potentially sensitive information from process memory, which can include page contents, in-memory secrets, or artifacts of other tabs. The issue affects Chrome on all major desktop platforms and is fixed in 150.0.7871.47.

Root Cause

The root cause is client-side enforcement of a security decision that should be enforced by the browser process. DevTools trusted the extension's requests without adequately validating that the requested memory or resources fell within the extension's granted scope. This aligns with [CWE-602], where security-relevant checks are performed at a boundary the attacker controls or influences.

Attack Vector

Exploitation requires the victim to install a malicious extension from an untrusted source or to be tricked through social engineering. Once installed, the extension opens or interacts with DevTools APIs and issues crafted requests designed to bypass the intended policy checks. No further privileges are needed, and the exploit runs entirely within the user's Chrome session. Public exploit code is not currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

No verified public proof-of-concept code is available. See the Chromium Issue Tracker Entry for additional technical context.

Detection Methods for CVE-2026-14081

Indicators of Compromise

Chrome extensions with devtools_page declared in their manifest that were sideloaded or installed outside the Chrome Web Store
Extensions requesting broad permissions such as debugger, tabs, or <all_urls> without a corresponding legitimate business use case
Outbound network connections initiated by Chrome extension processes to unknown domains shortly after DevTools activity

Detection Strategies

Inventory installed Chrome extensions across managed endpoints and compare against an approved allowlist
Alert on Chrome versions below 150.0.7871.47 reported by endpoint telemetry or browser management tooling
Review Chrome enterprise reporting events for extension installations from non-Web-Store sources

Monitoring Recommendations

Forward Chrome Enterprise extension telemetry and process activity to a centralized analytics platform for correlation
Monitor for anomalous child process creation or unusual memory access patterns originating from chrome.exe extension renderer processes
Track user-agent activity that installs new extensions immediately after visiting untrusted sites or opening phishing links

How to Mitigate CVE-2026-14081

Immediate Actions Required

Update Chrome to version 150.0.7871.47 or later on all Windows, macOS, and Linux endpoints
Audit installed extensions and remove any that are unapproved, sideloaded, or unnecessary
Enforce extension installation policies through Chrome Enterprise or equivalent management tooling

Patch Information

Google released the fix in the Stable Channel update announced in the Google Chrome Update Announcement. Administrators should confirm that the deployed Chrome build is 150.0.7871.47 or later. Managed environments using Chrome Enterprise can push the update via Group Policy, MDM, or configuration profiles.

Workarounds

Restrict extension installation to a curated allowlist using the ExtensionInstallAllowlist and ExtensionInstallBlocklist policies
Block installation of extensions from outside the Chrome Web Store using ExtensionInstallSources
Educate users to avoid installing extensions delivered via email, chat, or unofficial download sites

bash

# Chrome Enterprise policy example (Linux JSON policy)
# /etc/opt/chrome/policies/managed/extension_policy.json
{
  "ExtensionInstallBlocklist": ["*"],
  "ExtensionInstallAllowlist": [
    "cjpalhdlnbpafiamejdnhcphjbkeiagm"
  ],
  "ExtensionInstallSources": [
    "https://chrome.google.com/webstore/*"
  ]
}