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CVE-2026-92041

Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

What this means for your business

    What to do

    1. 1Ask your IT team or provider whether any of your systems use the affected product.
    2. 2If you do, follow the vendor's guidance. No patch reference has been published yet.

    Not sure if your company is exposed?

    Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

    Check if you’re exposedBook a call

    Scoring

    CVSS
    Not yet scored
    Assigned by
    security@mozilla.org

    Dates

    Published
    2026-09-15
    Last modified
    2026-09-16
    Sources
    NVD

    References