CVE-2026-126843
Description
A flaw was found in chromium-browser. A type confusion vulnerability in the Turbolev component allows a remote attacker to execute arbitrary code within the browser's sandbox (an isolated security environment) by convincing a user to visit a specially crafted HTML page. Successful exploitation compromises the sandboxed process and could facilitate further security bypasses.
Statement
This vulnerability is rated as Important severity because it allows remote execution of arbitrary code when an end user accesses a malicious webpage, but any resulting execution remains restricted to the browser sandbox. The flaw requires direct user interaction to trigger rendering of untrusted web content on client systems where the browser is actively in use. While exploitation compromises the isolated rendering process, reaching the underlying host operating system would necessitate chaining this vulnerability with an additional sandbox escape.
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)
Other
Technical Impact: Varies by Context
When the product accesses the resource using an incompatible type, this could trigger logical errors because the resource does not have expected properties.
Availability,Integrity,Confidentiality
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands; DoS: Crash, Exit, or Restart
If a memory buffer is accessed using an incompatible type, and the allocated buffer is smaller than the type that the code is attempting to access, then an attacker could read or write memory outside the bounds of the buffer, leading to a crash or possibly code execution.
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