Generation of Error Message Containing Sensitive Information in HumHub GmbH & Co. KG - HumHub on Linux allows: Excavation (user enumeration).This issue affects all released HumHub versions: through 1.16.2.

HumHub is an Open Source Enterprise Social Network. Affected versions of HumHub are vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, the attacker would need a permission to administer the Spaces feature. The names of individual "spaces" are not properly escaped and so an attacker with sufficient privilege could insert malicious javascript into a space name and exploit system users who visit that space. It is recommended that the HumHub is upgraded to 1.11.4, 1.10.5. There are no known workarounds for this issue.

A vulnerability was found in HumHub 0.20.1/1.0.0-beta.3. It has been classified as critical. This affects an unknown part. The manipulation leads to privilege escalation. It is possible to initiate the attack remotely. Upgrading to version 1.0.0 is able to address this issue. It is recommended to upgrade the affected component.

A vulnerability was found in HumHub up to 1.0.1 and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting (DOM). The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.1.1 is able to address this issue. It is recommended to upgrade the affected component.

A vulnerability has been found in HumHub up to 1.0.1 and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to cross site scripting (Reflected). The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.1.1 is able to address this issue. It is recommended to upgrade the affected component.

HumHub is an Open Source Enterprise Social Network. In affected versions users who are forced to change their password by an administrator may retrieve other users' data. This issue has been resolved by commit `eb83de20`. It is recommended that the HumHub is upgraded to 1.11.0, 1.10.4 or 1.9.4. There are no known workarounds for this issue.

HumHub is an open-source social network kit written in PHP. Prior to HumHub version 1.10.3 or 1.9.3, it could be possible for registered users to become unauthorized members of private Spaces. Versions 1.10.3 and 1.9.3 contain a patch for this issue.

HumHub Social Network Kit Enterprise v1.3.13 allows remote attackers to find the user accounts existing on any Social Network Kits (including self-hosted ones) by brute-forcing the username after the /u/ initial URI substring, aka Response Discrepancy Information Exposure.

A cross-site scripting (XSS) vulnerability in HumHub 1.3.12 allows remote attackers to inject arbitrary web script or HTML via a /protected/vendor/codeception/codeception/tests/data/app/view/index.php POST request.

A Reflected Cross Site Scripting (XSS) Vulnerability was discovered in file/file/upload in Humhub 1.3.10 Community Edition. The user-supplied input containing a JavaScript payload in the filename parameter is echoed back, which resulted in reflected XSS.