CVE-2026-93384 in Chrome
Summary
by MITRE • 09/18/2026
Server-side request forgery in Omnibox in Google Chrome on on Android prior to 153.0.8010.52 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 09/18/2026
The vulnerability identified as Server-Side Request Forgery within the Omnibox component of Google Chrome for Android represents a significant breach in how user input is processed and validated before being dispatched over the network. This flaw, present in versions prior to 153.0.8010.52, stems from insufficient validation mechanisms when handling URLs entered by users into the address bar. The Omnibox serves as the primary interface for navigation and search queries, making it a critical attack surface. When a user inputs a specially crafted URL or network request string, the browser fails to adequately sanitize or restrict the destination of that request. This lack of rigorous input validation allows an attacker to manipulate the client-side application into sending requests to internal resources or restricted endpoints that would otherwise be inaccessible due to system access restrictions and security policies designed to isolate user activity from sensitive infrastructure.
The operational impact of this vulnerability is primarily driven by social engineering tactics rather than direct exploitation through malicious code execution on the device itself. An attacker must leverage deception to convince a victim to interact with crafted network traffic, typically by directing them to a malicious website or phishing page that contains links designed to trigger the flawed behavior in the Omnibox. Once triggered, Chrome may send requests to internal IP addresses, local services, or other restricted resources on behalf of the user. This can lead to unauthorized access to internal networks, exposure of sensitive data hosted on private servers, or even further exploitation if those internal services have their own vulnerabilities. The severity is classified as Medium by Chromium security standards because while it bypasses important access controls, it requires active user interaction and does not allow for arbitrary code execution directly through the browser engine itself.
From a classification perspective, this vulnerability aligns with CWE-918 Server-Side Request Forgery (SSRF), which describes flaws where an application fetches a remote resource without validating the user-supplied URL. Additionally, it relates to CWE-20 Improper Input Validation, as the core issue is the failure to properly filter or restrict input data before processing. In terms of offensive security frameworks such as MITRE ATT&CK, this behavior falls under T1598 Phishing for Information and potentially T1071 Application Layer Protocol if used to exfiltrate data via standard web protocols. The attack vector emphasizes the importance of user awareness alongside technical controls, highlighting how social engineering can bypass even robust browser security models when input handling is flawed.
Mitigation strategies must focus on both immediate patching and long-term architectural improvements. Users should immediately update Google Chrome for Android to version 153.0.8010.52 or later, where these validation checks have been strengthened to prevent the unauthorized dispatch of requests to restricted destinations. For organizations deploying managed browsers, enforcing strict content security policies and restricting browser permissions can help limit the blast radius if such a vulnerability is exploited in future versions. Furthermore, implementing network-level controls such as firewalls that block outbound connections from mobile devices to internal subnets can provide an additional layer of defense against SSRF attacks. Security teams should also prioritize user education regarding phishing risks, ensuring employees and users understand how to identify suspicious links that might attempt to trigger similar vulnerabilities in their browsers.