CVE-2026-109782: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5 and Thunderbird 153.5.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a bypass of mitigation controls within the File Handling component of Mozilla Firefox. It was identified and fixed in Firefox ESR 153.5, indicating that all versions prior to 153.5 are affected. No further technical details or CVSS score are provided.
Potential Impact
The vulnerability could allow an attacker to bypass security mitigations related to file handling in Firefox, potentially increasing the risk of exploitation. However, no active exploitation has been reported.
Mitigation Recommendations
Users should update to Firefox ESR version 153.5 or later to remediate this vulnerability. Since an official fix is available, applying this update is the recommended action.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:49:20.493Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c512cdf04f65661d57c
Added to database: 10/13/2026, 13:04:17 UTC
Last enriched: 10/13/2026, 13:18:46 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 12
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