CVE-2026-109744

—Unscored

Published 13 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash

—Unscored

Attack vector: —
Complexity: —
Privileges needed: —
User interaction: —
Impact: —
Weakness: —

Impact

Attackers can compromise the browser environment by exploiting flaws in the DOM File component if a user visits a malicious page or opens an untrusted email. Specific impact details are not disclosed, but client-side browser bugs typically lead to memory corruption or sandbox escapes.

Root cause

An unspecified flaw exists within the DOM: File component implementation.

Affected systems

Firefox versions prior to 158, Firefox ESR versions prior to 153.5, Thunderbird versions prior to 158, and Thunderbird ESR versions prior to 153.5.

Fix & remediation

Upgrade to Firefox 158, Firefox ESR 153.5, Thunderbird 158, or Thunderbird 153.5. No interim workarounds or mitigations are provided.

shell

$ sudo apt-get update && sudo apt-get install --only-upgrade firefox thunderbird

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Other issue in the DOM: File component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109744