CVE-2026-109748
published 2026-10-13CVE-2026-109748: Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
PriorityP428medium5.4CVSS 3.1
AVNACLPRNUIRSUCLILAN
EPSS
0.22%
12.2th percentile
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 158 | Firefox 158 |
| mozilla | thunderbird | < Thunderbird 158 | Thunderbird 158 |
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GHSA
Use-after-free in the JavaScript: WebAssembly component.
ghsa_unreviewed·2026-10-13
CVE-2026-109748 [MEDIUM] CWE-416 Use-after-free in the JavaScript: WebAssembly component.
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158.
Mozilla
Mozilla Foundation Security Advisory 2026-109: CVE-2026-109748
vendor_mozilla·CVSS 5.4
CVE-2026-109748 [MEDIUM] Mozilla Foundation Security Advisory 2026-109: CVE-2026-109748
Mozilla Foundation Security Advisory 2026-109
CVE: CVE-2026-109748
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 158
Mozilla
Mozilla Foundation Security Advisory 2026-106: CVE-2026-109748
vendor_mozilla·CVSS 5.4
CVE-2026-109748 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109748
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109748
Product: Firefox
Impact: low
Fixed in: Firefox 158
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-10-13
Published