For native-to-JS bridging the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token could leak when used for downloading files. This vulnerability affects Firefox for iOS < 26.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Link | Tags |
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https://www.mozilla.org/security/advisories/mfsa2020-19/ | vendor advisory |
https://bugzilla.mozilla.org/show_bug.cgi?id=1631739 | issue tracking permissions required vendor advisory |