CVE-2026-83596 is a vulnerability in Red Hat Enterprise Linux (RHEL)
Published on August 31, 2026
Webkitgtk: validate the full featurelist array once in opentypeverticaldata findfeature
A flaw was found in WebKitGTK. Processing malicious web content can cause memory corruption due to improper memory handling.
Vulnerability Analysis
CVE-2026-83596 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2026-83596 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-83596
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