CVE-2026-19559
Description
A flaw was found in Google Chrome. This use-after-free vulnerability in the HTML component allows a remote attacker to execute arbitrary code within the browser's sandbox. This can be exploited by enticing a user to visit a specially crafted HTML page.
Statement
This is an Important flaw affecting Chromium-based browsers, such as chromium-browser in Red Hat products. A use-after-free vulnerability in the HTML component allows a remote attacker to achieve arbitrary code execution within the browser's sandbox. This requires user interaction, typically by visiting a specially crafted web page, but can lead to significant compromise of the affected system.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory
The use of previously freed memory may corrupt valid data, if the memory area in question has been allocated and used properly elsewhere.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If chunk consolidation occurs after the use of previously freed data, the process may crash when invalid data is used as chunk information.
Confidentiality
Technical Impact: Read Memory
Read operations on freed memory can sometimes leak sensitive information instead of causing a crash
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If malicious data is entered before chunk consolidation can take place, it may be possible to take advantage of a write-what-where primitive to execute arbitrary code. If the newly allocated data happens to hold a class, in C++ for example, various function pointers may be scattered within the heap data. If one of these function pointers is overwritten with an address to valid shellcode, execution of arbitrary code can be achieved.
Frequently Asked Questions
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