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    CVE-2020-26954

    When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

    Published:Dec 9, 2020
    Last Modified:Aug 19, 2026
    EPS:Dec 9, 2020
    EPSS Score:0.00633
    CVSS Score:4.3

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox Mobile

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-81267 (CVSS 5.4) — A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to dis…
    CVE-2026-74980 (CVSS 6.5) — Clickjacking issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox …
    CVE-2026-74975 (CVSS 5.4) — Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 154.…
    CVE-2026-74951 (CVSS 6.5) — Clickjacking issue in Firefox for Android. This vulnerability was fixed in Firefox 154.…
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    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