ZKEACMS through 4.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge REST API JWT bearer tokens using a hard-coded HMAC-SHA256 signing key in JwtBearerDefaults.cs. Attackers can sign a token with the Name claim set to 'admin' to call ApiAuthorize endpoints, modifying articles and products and reading form submissions.

An arbitrary file upload vulnerability in ZKEACMS v4.1 allows attackers to execute arbitrary code via a crafted file.

A vulnerability was detected in ZKEACMS 4.3. Impacted is the function Proxy of the file src/ZKEACMS/Controllers/MediaController.cs. Performing manipulation of the argument url results in server-side request forgery. It is possible to initiate the attack remotely. The exploit is now public and may be used.

A cross-site scripting (XSS) vulnerability in /navigation/create?ParentID=%23 of ZKEACMS v3.5.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the ParentID parameter.