What is CVE-2026-106016?
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 157.0.1.
The record classifies CVE-2026-106016 under weakness class CWE-693. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 2 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS (FIRST)
- 0.1% probability of exploitation in the next 30 days, higher than 3.1% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-10-06, last modified 2026-10-07
Is CVE-2026-106016 being exploited?
No public exploitation evidence for CVE-2026-106016 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-10-07. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.
Affected products and versions
- Mozilla: Firefox
How to fix CVE-2026-106016
No vendor patch reference has been recorded for CVE-2026-106016 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-106016
1 tracked threat in the Threadlinqs corpus references CVE-2026-106016, either in the campaign’s CVE list or as an indicator on the campaign record.
- Mozilla Firefox File Handling Mitigation Bypass Vulnerability (CVE-2026-106016) — MEDIUM · 2026-10-08
Sources
Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.