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    CVE-2026-8209

    Gibbon versions before v30.0.01 are affected by a path traversal vulnerability resulting in DOS by attempting extraction of web application PHP files, failed .zip extraction results in deletion of the file and a DOS condition. Successful exploitation requires Teacher or higher privileges. Exploitation could result in loss of availability of the web application.

    Published:May 9, 2026
    Last Modified:May 11, 2026
    EPS:May 9, 2026
    EPSS Score:0.00042
    CVSS Score:6.9

    Affected Products

    Vendor
    Gibbonedu
    Product
    Gibbon

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-23 Relative Path Traversal

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-139 Relative Path Traversal
    CAPEC-76 Manipulating Web Input to File System Calls

    Related CVEs

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    CVE-2025-26211 (CVSS 3.7) — Gibbon before 29.0.00 allows CSRF.…
    CVE-2024-51337 (CVSS 3.5) — Cross Site Scripting vulnerability in Gibbon before v.27.0.01 and fixed in v.28.0.00 allows a remote attacker …
    CVE-2024-34831 (CVSS 6.1) — cross-site scripting (XSS) vulnerability in Gibbon Core v26.0.00 allows an attacker to execute arbitrary code …
    CVE-2024-24724 (CVSS 9.8) — Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side Template Injection lea…
    CVE-2024-24725 (CVSS 8.8) — Gibbon through 26.0.00 allows remote authenticated users to conduct PHP deserialization attacks via columnOrde…
    CVE-2023-45879 (CVSS 5.4) — GibbonEdu Gibbon version 25.0.0 allows HTML Injection via an IFRAME element to the Messager component.…
    CVE-2023-45881 (CVSS 6.1) — GibbonEdu Gibbon through version 25.0.0 allows /modules/Planner/resources_addQuick_ajaxProcess.php file upload…
    CVE-2023-45880 (CVSS 7.2) — GibbonEdu Gibbon through version 25.0.0 allows Directory Traversal via the report template builder. An attacke…

    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