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    CVE-2026-118027

    Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.

    Published:Oct 27, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 27, 2026
    EPSS Score:
    CVSS Score:

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-118024 — Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 159 and Thunderbird 15…
    CVE-2026-118023 — Sandbox escape due to use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Fir…
    CVE-2026-118022 — Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in …
    CVE-2026-118021 — Sandbox escape due to use-after-free in the XPCOM component. This vulnerability was fixed in Firefox 159 and T…
    CVE-2026-118020 — Use-after-free in the Layout component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.…
    CVE-2026-118019 — Race condition, use-after-free in the DOM: File component. This vulnerability was fixed in Firefox 159 and Thu…
    CVE-2026-118018 — Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 159.…
    CVE-2026-118017 — Use-after-free in the SVG component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-118027 — Mozilla | CVE-DB