CVE-2026-109783None▾ Sunlit

Mitigation bypass in the File Handling component

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

Proof of concept

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Published

Oct 13, 2026

Updated

Oct 13, 2026

CVSS

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Vendor

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Product

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CWE

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Depth score

3 · Minimal

EPSS

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Platforms

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Source

NVD

Vector

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Full technical detail▾

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

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

#nvd