CVE-2026-103417Saved credentials can be autofilled after cross-origin navigation
Updated under an hour ago ()
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It affects Mozilla Firefox for iOS. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-346
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mozilla
- NVD analysis
- Deferred
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Mozilla Firefox for iOS mozilla:firefox_for_ios (from the name) | from 157.1 not affected | CNA record |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068171
- https://www.mozilla.org/security/advisories/mfsa2026-105/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.