CVE-2026-126871
Description
A flaw was found in the Skia graphics library within Chromium. A remote attacker can exploit an out-of-bounds read vulnerability by convincing a user to view a specially crafted HTML page. This flaw allows the attacker to read memory outside the restricted sandbox environment, resulting in unauthorized information disclosure.
Statement
Red Hat Product Security rates this vulnerability as Important because an unauthenticated remote attacker can bypass sandbox isolation barriers to access sensitive process memory, creating a significant confidentiality risk. Exploitation requires user interaction, as a local user must be persuaded to open a maliciously engineered web document in the browser. In typical workstation deployments where users process external web content, this out-of-bounds condition could expose host memory across boundaries, justifying the higher impact rating despite requiring victim cooperation.
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)
Confidentiality
Technical Impact: Read Memory
An attacker could get secret values such as cryptographic keys, PII, memory addresses, or other information that could be used in additional attacks.
Confidentiality
Technical Impact: Bypass Protection Mechanism
Out-of-bounds memory could contain memory addresses or other information that can be used to bypass ASLR and other protection mechanisms in order to improve the reliability of exploiting a separate weakness for code execution.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker could cause a segmentation fault or crash by causing memory to be read outside of the bounds of the buffer. This is especially likely when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string.
Other
Technical Impact: Varies by Context
The read operation could produce other undefined or unexpected results.
Frequently Asked Questions
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