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Vulnerability record · CVE-2026-14906 · published 13 July 2026

CVE-2026-14906: Mozilla firefox mobile unrestricted file upload vulnerability

Mozilla · Firefox Mobile

Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox. This vulnerability was fixed in Firefox for iOS 152.4.

5.3 CVSS 3.1 Medium EPSS 0.29% · top 80.5% CWE-434 · Unrestricted file upload
5.3CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
14 Jul 2026Last modified by NVD

Description

Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox. This vulnerability was fixed in Firefox for iOS 152.4.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=2045842 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-66/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-14906), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.