CVE-2026-106016: Mitigation bypass in the File Handling component

Q: Which Firefox versions are affected?

The available information states that the issue was fixed in Firefox 157.0.1. It does not identify the first affected version or provide a complete affected-version range.

Q: How can I remediate this issue?

Update Mozilla Firefox to version 157.0.1 or later. The provided information does not describe any workaround or mitigation for systems that cannot be updated immediately.

Q: What access or attacker interaction is required to exploit this vulnerability?

The available information does not specify attacker prerequisites, required user interaction, or an exploitation path.

Published Oct 6, 2026

Updated

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

Affected Software

2 affected componentsFixes available

Mozilla Firefox<157.0.1

157.0.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 157.0.1
Upgrade
Upgrade Firefox to a version that resolves this vulnerability.
Fixed in 157.0.1

Event History

Oct 6, 2026

CVE Published

via Mozilla·12:00 AM

Data Sourced

via Mozilla·12:00 AM

DescriptionSeverityAffected Software

CVE Published

via MITRE·12:30 PM

Data Sourced

via MITRE·12:30 PM

Description

Data Sourced

via NVD·01:16 PM

Description

Parent advisories

This vulnerability appears in the following advisories.

MFSA2026-104

Peer vulnerabilities

Found alongside the following vulnerabilities.

CVE-2026-106016

Frequently Asked Questions

Which Firefox versions are affected?

The available information states that the issue was fixed in Firefox 157.0.1. It does not identify the first affected version or provide a complete affected-version range.

How can I remediate this issue?

Update Mozilla Firefox to version 157.0.1 or later. The provided information does not describe any workaround or mitigation for systems that cannot be updated immediately.

What access or attacker interaction is required to exploit this vulnerability?

The available information does not specify attacker prerequisites, required user interaction, or an exploitation path.

CVE-2026-106016: Mitigation bypass in the File Handling component

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Which Firefox versions are affected?

How can I remediate this issue?

What access or attacker interaction is required to exploit this vulnerability?

Company

Resources

Contact