CVE-2025-6431
The prompt in Firefox for Android that asks before opening a link in an external application could be bypassed
- State
- Published
- Severity
- 6.5 Medium
- Published
- Jun 24, 2025
- Updated
- Apr 13, 2026
- Reserved
- Jun 20, 2025
Description
When a link can be opened in an external application, Firefox for Android will, by default, prompt the user before doing so. An attacker could have bypassed this prompt, potentially exposing the user to security vulnerabilities or privacy leaks in external applications. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | CISA-ADP |
Weaknesses
- CWE-285 Improper Authorization
Affected Products
| Product | Versions |
|---|---|
FirefoxMozilla |
|
References
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