CVE-2026-126893
Description
A flaw was found in chromium-browser. An out-of-bounds write vulnerability in the V8 JavaScript engine allows a remote attacker to execute arbitrary code within the browser's sandbox by convincing a user to view a specially crafted HTML page.
Statement
This vulnerability is rated as an Important severity rather than Critical because successful exploitation is confined to the browser sandbox, preventing immediate compromise of the underlying operating system. An attacker must persuade a user to navigate to malicious web content to trigger memory corruption within the V8 JavaScript engine. In typical Red Hat deployments, Chromium is used in graphical desktop or workstation installations, meaning server systems without desktop browser usage remain unaffected.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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