High severity8.8NVD Advisory· Published Sep 29, 2026· Updated Sep 29, 2026
CVE-2026-100776
CVE-2026-100776
Description
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
Affected products
2- Range: before 153.4, before 140.17
- Range: before 157
Patches
Vulnerability mechanics
References
4News mentions
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