CVE-2026-113312 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Autofill in Google Chrome on on Mac prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified involves a memory corruption flaw within the Autofill component of Google Chrome on macOS systems prior to version 156.0.8078.47. This specific defect resides in one of the browser's core user interface modules responsible for managing and displaying form data suggestions, such as addresses, credit card numbers, and login credentials. The security severity is classified as Low by Chromium standards, which typically indicates that while the issue allows for code execution within the sandboxed environment, it may require specific conditions or limited exploitation paths to achieve arbitrary code execution rather than a full system compromise. However, any memory corruption vulnerability in a browser engine remains critical due to the potential for bypassing security boundaries if combined with other weaknesses or through sophisticated exploitation techniques that target edge cases in memory management routines.
From a technical perspective, memory corruption vulnerabilities generally arise from improper handling of data structures, such as buffer overflows, use-after-free errors, or integer overflow issues during the processing of user input or internal state changes. In this context, an attacker could craft a malicious HTML page containing specially designed JavaScript and form elements that trigger the flawed logic within the Autofill module. When a victim visits this crafted webpage, potentially through social engineering tactics like phishing links or drive-by download scenarios, the browser processes the malformed data in a way that corrupts memory regions associated with the Autofill functionality. This corruption can lead to control flow hijacking, where the attacker gains the ability to execute arbitrary code within the context of the Chrome process sandbox.
The operational impact of this vulnerability is significant despite its low severity classification because it enables remote code execution via a web page. An attacker does not need physical access or prior authentication on the target system; instead, they only require the victim to load the malicious content into their browser. Once executed within the sandbox, the malware can attempt further exploitation steps to escape the Chrome sandbox and gain higher privileges on the host operating system. This could result in unauthorized data exfiltration, installation of persistent backdoors, or use of the compromised machine as part of a botnet. The presence of such vulnerabilities highlights the ongoing arms race between browser developers and attackers who continuously probe for weaknesses in complex software components like Autofill that handle sensitive user information.
Mitigation strategies primarily involve updating Google Chrome to version 156.0.8078.47 or later, where these memory management issues have been addressed by the development team through code fixes and enhanced validation checks. Users should ensure automatic updates are enabled for their browsers to receive security patches promptly after release. Additionally, employing browser hardening techniques such as disabling JavaScript on untrusted sites, using extensions that block malicious scripts, and maintaining up-to-date operating system defenses can reduce the attack surface. Security administrators should also monitor for indicators of compromise related to known exploitation kits targeting Chrome Autofill vulnerabilities and enforce strict content security policies where applicable in enterprise environments.
This vulnerability aligns with Common Weakness Enumeration categories such as CWE-120 Buffer Copy without Checking Size of Input Classic Buffer Overflow or CWE-416 Use After Free, depending on the exact nature of the memory corruption identified by researchers. In terms of attack tactics, it corresponds to MITRE ATT&CK techniques involving Initial Access via Spearphishing Link and Execution through Browser Scripting. Understanding these mappings helps security teams prioritize patch management and implement detection rules based on behavioral analytics that look for suspicious script execution patterns originating from web pages interacting with form elements. Continuous monitoring and rapid response to such advisories are essential components of a robust vulnerability management program aimed at protecting against remote code execution threats in modern web browsers.