CVE-2026-0628 is a high-severity vulnerability affecting Google Chrome, specifically prior to version 143.0.7499.192. This vulnerability allows attackers to exploit insufficient policy enforcement in the WebView tag, facilitating unauthorized script injection into privileged pages through crafted Chrome Extensions. The CVSS score of 8.8 indicates a significant risk, highlighting the potential for serious impact if exploited.
Organizations must recognize that the risk to them includes potential data leakage, unauthorized access, and manipulation of sensitive information. The ability for an attacker to convince a user to install a malicious extension exacerbates the risk, particularly in environments where user behavior cannot be easily controlled. Therefore, organizations should prioritize remediation efforts to mitigate the chances of exploitation.
The vulnerability is currently being analyzed, and while there is no confirmed public exploit available, there are indications of its high exploitability. Organizations are urged to monitor updates from Google and ensure their systems are updated to the latest version of Chrome to avoid potential risks.
Urgently, organizations should address this vulnerability as part of their security strategy, ensuring that they are equipped to defend against potential exploitation and maintain the integrity of their systems.
Vulnerability Details
The official description of CVE-2026-0628 states: 'Insufficient policy enforcement in WebView tag in Google Chrome prior to 143.0.7499.192 allowed an attacker who convinced a user to install a malicious extension to inject scripts or HTML into a privileged page via a crafted Chrome Extension.' This is classified under CWE-862, indicating issues related to missing authorization.
The vulnerability has a CVSS score of 8.8, categorized as high severity. The attack vector for this vulnerability is network-based, and it requires user interaction to exploit. The attack complexity is low, requiring no privileges from the attacker, while the impact on confidentiality, integrity, and availability is rated high.
This vulnerability affects all versions of Google Chrome prior to the mentioned patch. The publication date for this vulnerability was January 7, 2026, indicating a recent discovery and the need for prompt action.
Technical Analysis
The root cause of CVE-2026-0628 lies in insufficient policy enforcement within the WebView tag of Google Chrome. This flaw creates a pathway for attackers to leverage malicious extensions to inject unauthorized scripts into trusted web pages. The attack vector is primarily network-based, necessitating user interaction for successful exploitation, which is common in social engineering attacks.
The attack complexity is categorized as low, as it does not require elevated privileges for the attacker to initiate an exploit. However, it does require some form of user interaction, such as installing a malicious extension. The impacts of a successful exploit are severe, affecting confidentiality, integrity, and availability, as sensitive data can be compromised or altered.
Risk & Impact Analysis
Organizations utilizing Google Chrome should recognize the significant real-world deployment risks associated with CVE-2026-0628. The ability for attackers to inject scripts into privileged pages poses a serious threat to data integrity and user privacy. The blast radius potential is substantial, particularly in environments where Chrome is used as a primary browser for accessing sensitive applications.
Given the CVSS score of 8.8, the urgency for organizations to address this vulnerability is high. Immediate action is recommended to prevent exploitation, particularly considering the exploitability status and the potential for widespread impact if this vulnerability is leveraged by attackers.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects all versions of Google Chrome prior to 143.0.7499.192. Organizations should ensure that they upgrade to the latest version as soon as possible to mitigate this vulnerability.
Mitigation & Remediation
To address this vulnerability, organizations must prioritize updating Google Chrome to version 143.0.7499.192 or later. If immediate patching is not feasible, consider implementing workarounds such as disabling WebView functionality or applying network controls to restrict access to untrusted extensions. Additionally, organizations should monitor for unauthorized installations of extensions and enforce strict security policies for browser usage.
For further guidance on security measures, organizations may refer to the penetration testing services that can help identify vulnerabilities in their systems.
Detection Guidance
Organizations should monitor logs for indicators of malicious extension installations and track behavioral anomalies related to the use of Chrome Extensions. Implementing network signatures that can detect attempts to inject scripts into WebView pages may also be beneficial. Additionally, keeping an eye on system changes can help identify unauthorized alterations due to this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2026-0628 exemplifies the ongoing challenges in browser security, particularly in relation to user-installed extensions. The potential for privilege escalation through such vulnerabilities highlights the need for robust security measures and user education. Organizations should take this incident as a learning opportunity to enhance their security frameworks and ensure that similar vulnerabilities are identified and mitigated proactively.
For further insights, organizations may refer to the following resources: penetration testing methodology, vulnerability management program design, and API penetration testing guide which can provide valuable insights into mitigating similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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