User Interface (UI) Misrepresentation of Critical Information Affecting github.com/mozilla-mobile/firefox-ios package, versions <138.0.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-SWIFT-MOZILLAMOBILEFIREFOXIOS-10248212
- published27 May 2025
- disclosed30 Apr 2025
- creditJames Lee
Introduced: 30 Apr 2025
CVE-2025-3859 (opens in a new tab)How to fix?
Upgrade mozilla-mobile/firefox-ios to version 138.0.0 or higher.
Overview
mozilla-mobile/firefox-ios is a The source code and project files for the Firefox Focus application on the iOS platform.
Affected versions of this package are vulnerable to User Interface (UI) Misrepresentation of Critical Information due to the truncating behavior in the location view. An attacker can mislead users into believing they are visiting a legitimate site by manipulating the display of the URL in the address bar.
Note: This issue specifically affects Firefox Focus on iOS, which does not share the same code with Firefox
PoC
https://long-extended-subdomain-name-containing-many-letters-and-dashes.badssl.com/ysigsgksgkskgslgsogslgslgslgslgslgsogsogsogslgsogsyosoys