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    CVE-2026-55584

    phpSysInfo is a customizable PHP script that displays system information. Prior to 3.4.6, the PSI_ALLOWED access-control check in read_config.php trusts attacker-controlled X-Forwarded-For and Client-IP HTTP headers before REMOTE_ADDR. A remote unauthenticated attacker can supply an allowed address in one of these headers to impersonate a trusted client and access exposed hostname, kernel, CPU, memory, filesystem, and network-interface information. This issue is fixed in version 3.4.6.

    Published:Aug 28, 2026
    Last Modified:Aug 31, 2026
    EPS:Aug 28, 2026
    EPSS Score:0.02417
    CVSS Score:7.5

    Affected Products

    Vendor
    Phpsysinfo
    Product
    Phpsysinfo

    Exploits

    https://www.exploit-db.com/exploits/52648https://github.com/mirackayikci/CVE-2026-55584

    Related CVEs

    CVE-2023-49006 (CVSS 6.5) — Cross Site Request Forgery (CSRF) vulnerability in Phpsysinfo version 3.4.3 allows a remote attacker to obtain…
    CVE-2007-4048 (CVSS 4.3) — Cross-site scripting (XSS) vulnerability in index.php in phpSysInfo 2.5.4-dev and earlier allows remote attack…
    CVE-2006-3360 (CVSS 5) — Directory traversal vulnerability in index.php in phpSysInfo 2.5.1 allows remote attackers to determine the ex…
    CVE-2005-3348 (CVSS 4.3) — HTTP response splitting vulnerability in index.php in phpSysInfo 2.4 and earlier, as used in phpgroupware 0.9.…
    CVE-2005-0869 (CVSS 5) — phpSysInfo 2.3 allows remote attackers to obtain sensitive information via a direct request to (1) class.OpenB…
    CVE-2005-0870 (CVSS 4.3) — Multiple cross-site scripting (XSS) vulnerabilities in phpSysInfo 2.3, when register_globals is enabled, allow…
    CVE-2003-0536 (CVSS 3.6) — Directory traversal vulnerability in phpSysInfo 2.1 and earlier allows attackers with write access to a local …

    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