Description
A rogue webpage could override the injected WKUserScript used by the download feature, this exploit could result in the user downloading an unintended file. This vulnerability affects Firefox for iOS < 28.
Affected products
mozilla: firefox mobile
References4
- bugzilla.mozilla.org/show_bug.cgi?id=1653827 Issue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-34/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1653827 Issue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-34/ Vendor Advisory
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - EPSS — exploit probability
- 1% percentile: 53 · as of 11 November 2026
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