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    CVE-2023-29534

    Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. These could have led to potential user confusion and spoofing attacks. *This bug only affects Firefox and Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus for Android < 112.

    Published:Jun 19, 2023
    Last Modified:Aug 19, 2026
    EPS:Jun 19, 2023
    EPSS Score:0.007
    CVSS Score:9.1

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox Focus
    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

    Related CVEs

    CVE-2026-8945 (CVSS 7.5) — Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.…
    CVE-2026-2919 (CVSS 4.3) — Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stal…
    CVE-2025-10290 (CVSS 6.5) — Opening links via the contextual menu in Focus iOS for certain URL schemes would fail to load but would not re…
    CVE-2025-55033 (CVSS 6.1) — Dragging JavaScript links to the URL bar in Focus for iOS could be utilized to run malicious scripts, potentia…
    CVE-2025-55032 (CVSS 6.1) — Focus for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display …
    CVE-2025-55031 (CVSS 9.8) — Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transpo…
    CVE-2025-3859 (CVSS 6.1) — Websites directing users to long URLs that caused eliding to occur in the location view could leverage the tru…
    CVE-2024-10474 (CVSS 6.5) — Focus was incorrectly allowing internal links to utilize the app scheme used for deeplinking, which could resu…
    CVE-2024-8399 (CVSS 4.7) — Websites could utilize Javascript links to spoof URL addresses in the Focus navigation bar This vulnerability …
    CVE-2024-5022 (CVSS 4.4) — The file scheme of URLs would be hidden, resulting in potential spoofing of a website's address in the locatio…

    References

    https://bugzilla.mozilla.org/show_bug.cgi?id=1816007
    https://bugzilla.mozilla.org/show_bug.cgi?id=1816059
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821155
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821576
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821906
    https://bugzilla.mozilla.org/show_bug.cgi?id=1822298
    https://bugzilla.mozilla.org/show_bug.cgi?id=1822305
    https://www.mozilla.org/security/advisories/mfsa2023-13/
    https://bugzilla.mozilla.org/show_bug.cgi?id=1816007
    https://bugzilla.mozilla.org/show_bug.cgi?id=1816059
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821155
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821576
    https://bugzilla.mozilla.org/show_bug.cgi?id=1821906
    https://bugzilla.mozilla.org/show_bug.cgi?id=1822298
    https://bugzilla.mozilla.org/show_bug.cgi?id=1822305
    https://www.mozilla.org/security/advisories/mfsa2023-13/

    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