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    CVE-2026-54840

    Unauthenticated Broken Access Control in Newsletters <= 4.13 versions.

    Published:Jun 26, 2026
    Last Modified:Jun 29, 2026
    EPS:Jun 26, 2026
    EPSS Score:0.00213
    CVSS Score:7.3

    Affected Products

    Vendor
    Tribulant
    Product
    Newsletters
    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-2025-54034 (CVSS 7.5) — Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulner…
    CVE-2025-4857 (CVSS 7.2) — The Newsletters plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and includin…
    CVE-2024-13739 (CVSS 6.1) — The Newsletters plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the "to" parameter in…
    CVE-2025-24599 (CVSS 7.1) — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulan…
    CVE-2024-10181 (CVSS 6.4) — The Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's newsletters…
    CVE-2024-47346 (CVSS 7.1) — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulan…
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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