The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn parameter that corresponds to the exact filename.

The IMP plugin in Horde allows remote attackers to bypass firewall restrictions and use Horde as a proxy to scan internal networks via a crafted request to an unspecified test script. NOTE: this is only a vulnerability when the administrator does not follow recommendations in the product's installation documentation.

IMP 2.2 and earlier allows attackers to read and delete arbitrary files by modifying the attachment_name hidden form variable, which causes IMP to send the file to the attacker as an attachment.

Horde IMP 4.3.6 and earlier does not request that the web browser avoid DNS prefetching of domain names contained in e-mail messages, which makes it easier for remote attackers to determine the network location of the webmail user by logging DNS requests.

Horde Application Framework 3.0.9 allows remote attackers to read arbitrary files via a null character in the url parameter in services/go.php, which bypasses a sanity check.

An information disclosure vulnerability exists due to a web server misconfiguration in the Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a disclosure of sensitive information. An attacker can send an HTTP request to trigger this vulnerability.