CVE-2026-8947 is a vulnerability in Mozilla Firefox
Published on May 19, 2026
Use-after-free in the DOM: Bindings (WebIDL) component
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, and Firefox ESR 140.11.
Vulnerability Analysis
CVE-2026-8947 can be exploited 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-2026-8947 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-8947
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Affected Versions
Mozilla Firefox:- Version 115.36, <= 115.* is unaffected.
- Version 140.11, <= 140.* is unaffected.
- Version 151, <= * is unaffected.