CVE-2025-6431

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.

PUBLISHED Reserved 2025-06-20 | Published 2025-06-24 | Updated 2026-04-13 | Assigner mozilla

Product status

Credits

Umar Farooq

References

bugzilla.mozilla.org/show_bug.cgi?id=1942716

www.mozilla.org/security/advisories/mfsa2025-51/

cve.org (CVE-2025-6431)

nvd.nist.gov (CVE-2025-6431)

Download JSON