CVE-2026-106339 in Chrome
Summary
by MITRE • 10/07/2026
Use of released resource in Core in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to potentially obtain cross-origin data via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as CVE-2024-6715 represents a use-after-free condition within the core rendering engine of Google Chrome, specifically affecting versions prior to 155.0.8059.39. This class of memory corruption error occurs when an application continues to use a pointer after it has been freed or released, leading to undefined behavior that can be exploited by malicious actors. In this specific instance, the flaw resides in the Chromium codebase and is categorized under CWE-416, which defines Use After Free as a critical software weakness where memory management logic fails to properly invalidate references to deallocated resources. The severity of this vulnerability is assessed as Low within the Chromium security framework, indicating that while it poses a risk, successful exploitation requires specific preconditions or limited attacker capabilities compared to high-severity issues like remote code execution via buffer overflows in privileged processes.
The operational impact of this flaw centers on the potential for cross-origin data theft by an attacker who has already achieved compromise within the renderer process. Modern web browsers employ strict sandboxing mechanisms, such as site isolation and process separation, designed to contain damage if a single tab or frame is compromised. The renderer process handles untrusted content from websites and operates with restricted privileges to prevent direct access to sensitive system resources or other browsing contexts. However, when an attacker successfully exploits this use-after-free vulnerability within the renderer, they can manipulate memory states in a way that bypasses these isolation boundaries. By crafting a specific HTML page that triggers the race condition between resource allocation and deallocation, the malicious code can read stale data from previously freed memory blocks. This allows the extraction of sensitive information belonging to other origins or sites visited by the user, effectively breaking the cross-origin policy protections intended to keep web content segregated.
From an offensive security perspective, this vulnerability aligns with several techniques documented in the MITRE ATT&CK framework for enterprise detection and response planning. The exploitation method corresponds to T1059 Command and Scripting Interpreter, as it involves executing crafted HTML scripts within a browser context. More specifically, the outcome of obtaining cross-origin data maps directly to T1530 Data from Local System, which covers stealing files or information from local devices through web browsers. Additionally, because the attack relies on manipulating memory structures after they have been released, it reflects aspects of T1204 User Execution if social engineering is used to lure a victim into visiting the crafted page, although in this context, the primary vector is likely drive-by exploitation within an already compromised or untrusted renderer environment. The ability to read cross-origin data undermines the fundamental trust model of the web, allowing attackers to harvest session cookies, authentication tokens, or personal user data from different domains without explicit permission.
Mitigation for this vulnerability primarily involves updating Google Chrome and its underlying Chromium-based browsers to version 155.0.8059.39 or later, where the memory management logic has been corrected to prevent the use of released resources. Organizations should ensure that their endpoint protection platforms are configured to detect anomalous browser behavior associated with memory corruption exploits, such as unusual heap allocations or frequent crashes in renderer processes. Furthermore, enforcing strict Content Security Policies and disabling unnecessary JavaScript features can reduce the attack surface available to attackers attempting to craft complex exploitation payloads. Regular patch management cycles are essential for maintaining security posture against these types of low-to-medium severity vulnerabilities that rely on precise timing and memory state manipulation rather than simple logic errors.