Description
Firefox for iOS displayed specially crafted right-to-left (RTL) and internationalized domain names (IDNs) incorrectly in link preview UI surfaces. A crafted RTL hostname could visually reorder portions of the displayed domain, causing attacker-controlled sites to appear as trusted origins. This vulnerability was fixed in Firefox for iOS 151.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox for iOS | — | 151.1 |
Advisories 1
- WID-SEC-2026-1668 Mozilla Firefox: Schwachstelle ermöglicht Darstellen falscher Informationen BSI CERT-Bund (WID) · May 25, 2026