Alkacon · Alkacon Opencms · CVE-2021-3312
**Name of the Vulnerable Software and Affected Versions**
Alkacon OpenCms versions 11.0 through 11.0.2
**Description**
An XML external entity (XXE) issue allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.
**Recommendations**
For versions 11.0 through 11.0.2, update to a version that includes a fix for this issue to prevent file exfiltration.
As a temporary workaround, consider restricting the upload of SVG documents or limiting edit privileges to trusted users until a patch is available.