CVE-2026-2313 in Chrome
Summary
by MITRE • 02/11/2026
Use after free in CSS in Google Chrome prior to 145.0.7632.45 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 02/16/2026
This vulnerability represents a critical heap corruption issue affecting Google Chrome versions prior to 145.0.7632.45, specifically within the Cascading Style Sheets implementation. The flaw manifests as a use-after-free condition that occurs when processing crafted HTML content containing CSS elements. Such vulnerabilities typically arise when memory allocated for CSS objects is freed but references to that memory persist, creating opportunities for malicious code execution. The Chromium security severity classification of High indicates the potential for significant exploitation risk, particularly given the browser's widespread usage and the nature of heap corruption vulnerabilities. This issue falls under the CWE-416 category of Use After Free, which is a well-documented vulnerability pattern that has been exploited in numerous security incidents throughout the web browser landscape. The vulnerability exists in the CSS parsing and rendering pipeline where memory management fails to properly track object lifecycles, allowing freed memory to be accessed or overwritten by subsequent operations.
The operational impact of this vulnerability extends beyond simple memory corruption, as it provides a potential attack vector for remote code execution. When an attacker crafts a malicious HTML page containing specifically constructed CSS elements, the browser's rendering engine may attempt to access memory that has already been freed, potentially leading to arbitrary code execution on the target system. This type of vulnerability is particularly dangerous in web browsers because they process untrusted content from multiple sources and often run with elevated privileges. The heap corruption aspect means that attackers can manipulate memory layout to inject malicious code or cause the application to behave unpredictably. The exploitation typically requires a combination of memory corruption primitives and sandbox escape techniques, making it a sophisticated attack vector that aligns with advanced persistent threat patterns documented in the ATT&CK framework under techniques related to memory corruption and privilege escalation.
Mitigation strategies for this vulnerability primarily focus on immediate patching and deployment of the fixed Chrome version 145.0.7632.45 or later, which contains the necessary memory management fixes for the CSS processing routines. Organizations should implement comprehensive patch management procedures to ensure rapid deployment of security updates across all browser installations. Additional protective measures include browser hardening configurations such as enabling sandboxing features, implementing content security policies, and deploying web application firewalls that can detect and block malicious HTML content. Network-level protections can also help by filtering out suspicious CSS patterns and implementing strict web content filtering. Security teams should monitor for indicators of compromise related to this vulnerability, including unusual memory access patterns or unexpected browser behavior that might suggest exploitation attempts. The remediation process must also include user education about avoiding untrusted web content and understanding the risks associated with visiting malicious websites. Regular security assessments and penetration testing should be conducted to validate that the patch has effectively resolved the vulnerability and to identify any potential side effects from the security update.