CVE-2026-113203
Description
A flaw was found in chromium-browser. A remote attacker could execute arbitrary code within the browser sandbox by convincing a user to visit a specially crafted HTML page. This vulnerability is caused by a use-after-free memory corruption issue in the Cascading Style Sheets (CSS) engine.
Statement
Red Hat Product Security rates this vulnerability as Important because an attacker can achieve arbitrary code execution within the client-side rendering engine if an end user navigates to an attacker-controlled site. Although this presents high impact to integrity and confidentiality within the application, exploitation requires user interaction and code execution remains restricted by the browser sandbox boundary. Chromium is not included in Red Hat Enterprise Linux products and is only distributed through community channels such as EPEL and Fedora.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
