medium6.3
CVE-2026-45150
Zen is a firefox-based browser.
Impact
Zen is a firefox-based browser. Prior to 1.19.13b, Zen Browser did not provide a persistent, clearly visible security notification when a webpage entered fullscreen mode, allowing an attacker-controlled page to hide the real browser UI and origin information, imitate a trusted website UI, and combine with long-domain URL eliding to spoof a trusted origin for phishing and credential theft. This issue is fixed in version 1.19.13b.
Affected products
| Product | Affected versions |
|---|---|
| Zen Is A Firefox-Based Browser. | before 1.19.13b |
Versions were read from the advisory text. No structured product data has been published for this record yet.