CVE-2026-109750
published 2026-10-13CVE-2026-109750: Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
PriorityP349critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.38%
31.8th percentile
Site isolation issue in the DOM: Web Authentication 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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Mozilla
Mozilla Foundation Security Advisory 2026-109: CVE-2026-109750
vendor_mozilla
CVE-2026-109750 Mozilla Foundation Security Advisory 2026-109: CVE-2026-109750
Mozilla Foundation Security Advisory 2026-109
CVE: CVE-2026-109750
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 158
Mozilla
Mozilla Foundation Security Advisory 2026-106: CVE-2026-109750
vendor_mozilla
CVE-2026-109750 Mozilla Foundation Security Advisory 2026-106: CVE-2026-109750
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109750
Product: Firefox
Impact: low
Fixed in: Firefox 158
GHSA
Site isolation issue in the DOM: Web Authentication component.
ghsa_unreviewed·2026-10-13
CVE-2026-109750 Site isolation issue in the DOM: Web Authentication component.
Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-10-13
Published