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    CVE-2025-24013

    CodeIgniter is a PHP full-stack web framework. Prior to 4.5.8, CodeIgniter lacked proper header validation for its name and value. The potential attacker can construct deliberately malformed headers with Header class. This could disrupt application functionality, potentially causing errors or generating invalid HTTP requests. In some cases, these malformed requests might lead to a DoS scenario if a remote service’s web application firewall interprets them as malicious and blocks further communication with the application. This vulnerability is fixed in 4.5.8.

    Published:Jan 20, 2025
    Last Modified:Aug 1, 2025
    EPS:Jan 20, 2025
    EPSS Score:0.00099
    CVSS Score:5.3

    Affected Products

    Vendor
    Codeigniter
    Product
    Codeigniter

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-436 Interpretation Conflict

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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