CVE-2026-100796
published 2026-09-29CVE-2026-100796: Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
PriorityP345high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.30%
21.2th percentile
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
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Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100796
vendor_mozilla·CVSS 8.8
CVE-2026-100796 [HIGH] Mozilla Foundation Security Advisory 2026-101: CVE-2026-100796
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100796
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100796
vendor_mozilla·CVSS 8.8
CVE-2026-100796 [HIGH] Mozilla Foundation Security Advisory 2026-97: CVE-2026-100796
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100796
Product: Firefox
Impact: low
Fixed in: Firefox 157
GHSA
Use-after-free in the JavaScript: WebAssembly component.
ghsa_unreviewed·2026-09-29
CVE-2026-100796 [HIGH] CWE-416 Use-after-free in the JavaScript: WebAssembly component.
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 157.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-09-29
Published