CVE-2026-14906: Malicious webpage titles could allow overwriting of bundled PDF resources when saving webpages as PDFs in Firefox for iOS

Published Jul 13, 2026
·
Updated

Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox.

Affected Software

4 affected components
Mozilla Firefox for iOS<152.4
All of the following
Mozilla Firefox=152.4
Apple iOS
Mozilla Firefox Mobile Iphone Os<152.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Firefox for iOS to a version that resolves this vulnerability.

    Fixed in 152.4

Event History

Jul 13, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
CVE Published
via MITRE·06:27 PM
Data Sourced
via MITRE·06:27 PM
Description
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-14906?

The severity of CVE-2026-14906 is medium with a CVSS score of 5.3.

2

How do I fix CVE-2026-14906?

To fix CVE-2026-14906, ensure you are using the latest version of Mozilla Firefox or Firefox for iOS where the vulnerability has been addressed.

3

What does CVE-2026-14906 affect?

CVE-2026-14906 affects Mozilla Firefox for iOS and the Firefox desktop application.

4

What potential risk does CVE-2026-14906 pose?

CVE-2026-14906 could allow malicious webpages to overwrite bundled PDF resources when saved as PDFs.

5

Are there specific versions affected by CVE-2026-14906?

Yes, specifically versions of Mozilla Firefox for iOS prior to the security update addressing CVE-2026-14906 are affected.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203