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    CVE-2026-12902

    The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.7.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create arbitrary Media Library attachments by downloading remote images to the site's uploads directory via wp_upload_bits() and wp_insert_attachment(), bypassing the upload_files capability boundary.

    Published:Jul 1, 2026
    Last Modified:Jul 1, 2026
    EPS:Jul 1, 2026
    EPSS Score:0.00272
    CVSS Score:4.3

    Affected Products

    Vendor
    Stellarwp
    Product
    Kadence Blocks — Page Builder Toolkit For Gutenberg Editor
    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-18435 (CVSS 6.4) — The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cr…
    CVE-2026-15286 (CVSS 4.3) — The Gutenberg Blocks with AI by Kadence WP – Page Builder Features plugin for WordPress is vulnerable to unaut…
    CVE-2026-12904 (CVSS 4.3) — The Kadence Blocks – Gutenberg Blocks for Page Builder Features plugin for WordPress is vulnerable to Insecure…
    CVE-2026-11357 (CVSS 4.3) — The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Sensitive…
    CVE-2026-2826 (CVSS 4.3) — The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authoriza…
    CVE-2026-2633 (CVSS 4.3) — The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Missing Authorization in all …
    CVE-2026-1857 (CVSS 4.3) — The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Server-Side Request Forgery i…
    CVE-2026-2608 (CVSS 4.3) — The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to unauthori…

    References

    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/class-kadence-blocks-prebuilt-library.php#L1078
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/class-kadence-blocks-prebuilt-library.php#L1223
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/class-kadence-blocks-prebuilt-library.php#L817
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.7/includes/class-kadence-blocks-prebuilt-library.php#L916
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/class-kadence-blocks-prebuilt-library.php#L1078
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/class-kadence-blocks-prebuilt-library.php#L1223
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/class-kadence-blocks-prebuilt-library.php#L817
    https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.6/includes/class-kadence-blocks-prebuilt-library.php#L916
    https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590217%40kadence-blocks&new=3590217%40kadence-blocks&sfp_email=&sfph_mail=
    https://www.wordfence.com/threat-intel/vulnerabilities/id/7de2cb7a-dc3d-41f2-8faa-9e87f78531b5?source=cve

    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