CVE-2026-106016
Received Received - Intake

Mitigation Bypass in Firefox File Handling

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Mozilla Corporation

Description
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1.

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-106016
EUVD
EUVD-2026-93377

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 157.0.1

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a mitigation bypass vulnerability in Firefox's File Handling component. It allows bypassing security measures that should prevent unauthorized file operations. The issue was patched in Firefox version 157.0.1.

Detection Guidance

Detection requires checking the installed version of Firefox. Compare your version against Firefox 157.0.1 or later. Use commands like 'firefox --version' on Linux/macOS or check 'Help > About Firefox' in the application.

Impact Analysis

An attacker could exploit this to perform unauthorized file operations on your system through Firefox. This might lead to data theft, malware installation, or other malicious activities depending on the attacker's goals.

Compliance Impact

This vulnerability could potentially violate compliance requirements that mandate secure file handling and data protection, such as GDPR's integrity and confidentiality principles or HIPAA's safeguards for protected health information.

Mitigation Strategies

Update Firefox to version 157.0.1 or later immediately. Disable automatic file handling if possible and avoid opening untrusted files until patched.

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