CVE-2026-109782
Received Received - Intake

Mitigation Bypass in Firefox ESR File Handling

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109782
EUVD
EUVD-2026-98542

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox_esr 153.5

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Exploitability

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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 the File Handling component of Firefox ESR. It allows attackers to bypass security measures that were meant to prevent certain types of attacks.

Impact Analysis

An attacker could exploit this to bypass security controls, potentially leading to unauthorized access to files or execution of malicious code. Users should update to Firefox ESR 153.5 to mitigate the risk.

Mitigation Strategies

Update Firefox ESR to version 153.5 or later to address the mitigation bypass in the File Handling component.

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