CVE-2026-103417mediumCWE-346

CVE-2026-103417: medium-severity vulnerability in Mozilla Firefox for iOS

Saved credentials can be autofilled after cross-origin navigation

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.5epss 0.1%
Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open. Autofill was not bound to the originating page or rejected when its origin changed. This vulnerability was fixed in Firefox for iOS 157.1.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected products
Mozilla · Firefox for iOS
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