CVE-2026-109750
Site isolation issue in the DOM: Web Authentication component
- Risk score
- 69/100
- CVSS
- 9.6 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.6 critical
- Remotely exploitable without logging in
References
Original description
Site isolation issue in the DOM: Web Authentication component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.
Last activity 13 Oct 2026. Patch Forecast updates every hour.