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    CVE-2021-26929

    An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.

    Published:Feb 14, 2021
    Last Modified:Nov 21, 2024
    EPS:Feb 14, 2021
    EPSS Score:0.02965
    CVSS Score:6.1

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Horde
    Product
    Groupware

    Exploits

    http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.htmlhttps://www.alexbirnberg.com/horde-xss.htmlhttp://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.htmlhttps://www.alexbirnberg.com/horde-xss.htmlhttps://www.exploit-db.com/exploits/49769

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    References

    http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html
    http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html
    https://github.com/horde/webmail/releases
    https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html
    https://lists.horde.org/archives/announce/2021/001298.html
    https://www.alexbirnberg.com/horde-xss.html
    https://www.horde.org/apps/webmail
    http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html
    http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html
    https://github.com/horde/webmail/releases
    https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html
    https://lists.horde.org/archives/announce/2021/001298.html
    https://www.alexbirnberg.com/horde-xss.html
    https://www.horde.org/apps/webmail

    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