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    CVE-2008-1930

    The cookie authentication method in WordPress 2.5 relies on a hash of a concatenated string containing USERNAME and EXPIRY_TIME, which allows remote attackers to forge cookies by registering a username that results in the same concatenated string, as demonstrated by registering usernames beginning with "admin" to obtain administrator privileges, aka a "cryptographic splicing" issue. NOTE: this vulnerability exists because of an incomplete fix for CVE-2007-6013.

    Published:Apr 28, 2008
    Last Modified:Apr 23, 2026
    EPS:Apr 28, 2008
    EPSS Score:0.08455
    CVSS Score:7.5

    Affected Products

    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    https://github.com/HeisenbergH4X/CVE-2008-1930

    Common Weakness Enumeration

    CWE-287 Improper Authentication

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    CVE-2026-84816 (CVSS 7.1) — Unauthenticated Cross Site Scripting (XSS) in WPCS <= 1.3.2 versions.…
    CVE-2026-81803 (CVSS 7.5) — Subscriber Remote Code Execution (RCE) in RepairBuddy <= 4.1224 versions.…
    CVE-2026-81799 (CVSS 7.5) — Unauthenticated Broken Access Control in Return Refund and Exchange For WooCommerce <= 4.6.4 versions.…
    CVE-2026-81796 (CVSS 7.3) — Unauthenticated Broken Authentication in WP Travel <= 12.0.3 versions.…
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    References

    http://secunia.com/advisories/29965
    http://wordpress.org/development/2008/04/wordpress-251/
    http://www.cl.cam.ac.uk/users/sjm217/advisories/wordpress-cookie-integrity.txt
    http://www.securityfocus.com/archive/1/491356/100/0/threaded
    http://www.securityfocus.com/bid/28935
    http://www.securitytracker.com/id?1019923
    http://www.vupen.com/english/advisories/2008/1372/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/42027
    http://secunia.com/advisories/29965
    http://wordpress.org/development/2008/04/wordpress-251/
    http://www.cl.cam.ac.uk/users/sjm217/advisories/wordpress-cookie-integrity.txt
    http://www.securityfocus.com/archive/1/491356/100/0/threaded
    http://www.securityfocus.com/bid/28935
    http://www.securitytracker.com/id?1019923
    http://www.vupen.com/english/advisories/2008/1372/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/42027

    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