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    CVE-2026-28555

    wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions.

    Published:Feb 28, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 28, 2026
    EPSS Score:0.00032
    CVSS Score:4.3

    Affected Products

    Vendor
    Gvectors
    Product
    Wpforo Forum
    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-2026-28559 (CVSS 6.9) — wpForo Forum 2.4.14 contains an information disclosure vulnerability that allows unauthenticated users to retr…
    CVE-2026-28558 (CVSS 5.1) — wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows authenticated subscribers…
    CVE-2026-28557 (CVSS 7.1) — wpForo Forum 2.4.14 contains a missing capability check vulnerability that allows authenticated users to trigg…
    CVE-2026-28556 (CVSS 5.3) — wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to mo…
    CVE-2026-28554 (CVSS 5.3) — wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to ap…
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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