7.3
High
CVE-2026-8947 Use-after-free in the DOM: Bindings (WebIDL) component
Description
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 151 | earliest → < 151 | 151 |
| Firefox 140.11 | earliest → < 140.11 | 140.11 |
| Firefox 115.36 | earliest → < 115.36 | 115.36 |
| Thunderbird 151 | earliest → < 151 | 151 |
| Thunderbird 140.11 | earliest → < 140.11 | 140.11 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Versions not published | |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Versions not published | |
| Red Hat Enterprise Linux AppStream (v. 10) | Versions not published | |
| Red Hat Enterprise Linux AppStream (v. 8) | Versions not published |