Firefox WebAssembly Component UAF (pre-150.0.3)
CVE-2026-8390 Published on May 12, 2026
Use-after-free in the JavaScript: WebAssembly component
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.
Vulnerability Analysis
CVE-2026-8390 is exploitable with network access, and does not require authorization privileges or 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 low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-8390 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-8390
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Affected Versions
Mozilla Firefox:- Version 150.0.3, <= * is unaffected.