CVE-2026-13281 in Chrome
Summary
by MITRE • 06/26/2026
Integer overflow in Mojo in Google Chrome prior to 149.0.7827.201 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 06/26/2026
This vulnerability represents a critical integer overflow flaw within the mojo framework of google chrome browser versions prior to 149.0.7827.201. the mojo library serves as a core component for inter-process communication and rendering operations within chrome's architecture, making it a prime target for exploitation by attackers who have already gained access to the renderer process. the integer overflow occurs when handling certain file operations that involve size calculations or memory allocations where large values are processed without proper bounds checking, leading to unexpected behavior in memory management and potentially allowing arbitrary code execution.
the technical implementation of this vulnerability stems from inadequate input validation and arithmetic overflow handling within the mojo message passing system. when a malicious file is processed, the system fails to properly validate integer parameters used for buffer sizing or memory allocation calculations, causing the overflow to occur at critical points during file parsing or rendering operations. this flaw enables an attacker who has already compromised the renderer process through techniques such as sandbox bypassing or privilege escalation to leverage the overflow condition to break out of the restricted sandbox environment and gain broader system access.
from an operational impact perspective, this vulnerability creates a significant security risk for chrome users since it requires only a compromised renderer process to achieve sandbox escape, which is often achievable through other means such as exploiting web-based vulnerabilities or social engineering attacks. the chromium security severity classification of high reflects the potential for privilege escalation and system compromise that can occur once an attacker successfully exploits this vulnerability. organizations relying on chrome browsers for web browsing and application execution face substantial risk from this flaw, as it could enable attackers to execute arbitrary code with elevated privileges or access sensitive user data.
the exploitation of this vulnerability aligns with attack patterns described in the attack tree framework where initial compromise leads to privilege escalation through memory corruption vulnerabilities. according to common weakness enumeration standards, this represents a cwe-190 integer overflow condition that can lead to more severe consequences when combined with other security flaws. mitigation strategies should focus on immediate patching of chrome installations to version 149.0.7827.201 or later, along with implementing additional security controls such as process isolation, memory protection mechanisms, and monitoring for suspicious memory allocation patterns. organizations should also consider implementing network-based intrusion detection systems that can identify attempts to exploit this specific vulnerability pattern and maintain updated threat intelligence regarding similar integer overflow exploits in other browser components.
the broader implications of this vulnerability extend beyond immediate exploitation scenarios, as it highlights the importance of robust input validation and memory safety mechanisms in modern browser architectures. security researchers have noted that similar integer overflow patterns in web browser components often serve as stepping stones for more sophisticated attacks, including those targeting zero-day exploits or advanced persistent threats. proper code review practices and automated static analysis tools should be implemented to identify potential integer overflow conditions in similar frameworks and libraries across the software development lifecycle. organizations should also consider implementing additional security measures such as address space layout randomization, control flow integrity checks, and regular security assessments of browser components to prevent similar vulnerabilities from being exploited in the future.