Chrome Extension Turns Malicious After Ownership Transfer, Enabling Code Injection and Data Theft

Two Google Chrome extensions have turned malicious after what appears to be a case of ownership transfer, offering attackers a way to push malware to downstream customers, inject arbitrary code, and harvest sensitive data. The extensions in question, both originally associated with a developer...

287 Chrome Extensions Caught Harvesting Browsing Data from 37M Users

New investigation by Q Continuum reveals 287 Chrome extensions leaking the private browsing data of 37.4 million users to firms like Similarweb and Alibaba. Learn how these harmless tools turn your history into a product...

How to find and remove credential-stealing Chrome extensions

Researchers have found yet another family of malicious extensions in the Chrome Web Store. This time, 30 different Chrome extensions were found stealing credentials from more than 260,000 users. The extensions rendered a full-screen iframe pointing to a remote domain. This iframe overlaid the...

Researchers Uncover Chrome Extensions Abusing Affiliate Links and Stealing ChatGPT Access

Cybersecurity researchers have discovered malicious Google Chrome extensions that come with capabilities to hijack affiliate links, steal data, and collect OpenAI ChatGPT authentication tokens. One of the extensions in question is Amazon Ads Blocker ID: pnpchphmplpdimbllknjoiopmfphellj, which...

Malicious Chrome extensions can spy on your ChatGPT chats

Researchers discovered 16 malicious browser extensions for Google Chrome and Microsoft Edge that steal ChatGPT session tokens, giving attackers access to accounts, including conversation history and metadata. The 16 malicious extensions 15 for Chrome and 1 for Edge claim to improve and optimize...

Five Malicious Chrome Extensions Impersonate Workday and NetSuite to Hijack Accounts

Cybersecurity researchers have discovered five new malicious Google Chrome web browser extensions that masquerade as human resources HR and enterprise resource planning ERP platforms like Workday, NetSuite, and SuccessFactors to take control of victim accounts. "The extensions work in concert to...

Astra Linux – Vulnerability in Chromium

In Google Chrome versions prior to 142.0.7444.59, policy bypass in Extensions allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from process memory through a crafted Chrome Extension. Chromium security severity: Medium...

Fake ChatGPT and DeepSeek Extensions Spied on Over 1 Million Chrome Users

Security researchers have identified two malicious Chrome extensions recording AI chats. Learn how to identify and remove these tools to protect your privacy...

Two Chrome Extensions Caught Stealing ChatGPT and DeepSeek Chats from 900,000 Users

Cybersecurity researchers have discovered two new malicious extensions on the Chrome Web Store that are designed to exfiltrate OpenAI ChatGPT and DeepSeek conversations alongside browsing data to servers under the attackers' control. The names of the extensions, which collectively have over 900,0...

PT-2026-26529

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 146.0.7680.153 Description A use-after-free issue exists in the Extensions component of Google Chrome. This flaw could allow an attacker to convince a user to install a malicious extension, potentially leading t...

Two Chrome Extensions Caught Secretly Stealing Credentials from Over 170 Sites

Cybersecurity researchers have discovered two malicious Google Chrome extensions with the same name and published by the same developer that come with capabilities to intercept traffic and capture user credentials. The extensions are advertised as a "multi-location network speed test plug-in" for...

ROS-20251216-7371

A vulnerability in the Extensions component of Google Chrome and Microsoft Edge browsers is related to incorrect resource initialization. Exploitation of the vulnerability may allow a remote attacker to gain unauthorized access to protected information...

ROS-20251216-7358

A vulnerability in the Extensions component of Google Chrome and Microsoft Edge browsers is related to flaws in the implementation of security checks for standard elements. Exploitation of the vulnerability could allow an attacker acting remotely to bypass existing security restrictions...

Malicious GenAI Chrome Extensions: Unpacking Data Exfiltration and Malicious Behaviours

The rapid proliferation of AI and GenAI tools has extended to the Chrome Web Store. Cybercriminals are exploiting this trend, deploying malicious Chrome extensions posing as AI tools or impersonating popular GenAI models to target users. These extensions often appear legitimate while secretly...

“Sleeper” browser extensions woke up as spyware on 4 million devices

Researchers have unraveled a malware campaign that really did play the long game. After seven years of behaving normally, a set of browser extensions installed on roughly 4.3 million Chrome and Edge users’ devices suddenly went rogue. Now they can track what you browse and run malicious code insi...

EUVD-2025-50791

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 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: Low...

EUVD-2025-50800

Inappropriate implementation in Extensions in Google Chrome prior to 142.0.7444.59 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension. Chromium security severity: High...

CVE-2025-12445

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 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: Low...

CVE-2025-12445

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 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: Low...

CVE-2025-12436

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from process memory via a crafted Chrome Extension. Chromium security severity: Medium...