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Vulnerability record · CVE-2026-106016 · published 6 October 2026

CVE-2026-106016: Mozilla firefox vulnerability

Mozilla · Firefox

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1 and Thunderbird 158.

9.8 CVSS 3.1 Critical EPSS 0.32% · top 74.9% CWE-693 · CWE-693
9.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
13 Oct 2026Last modified by NVD

Description

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1 and Thunderbird 158.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=2067465 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-104/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-109/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-106016), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.