There are 2 open security issues in bullseye.
1 issue left for the package maintainer to handle:
HTMLCreator release_stable_2020-07-29 was discovered to contain a cross-site scripting (XSS) vulnerability via the function _generateFilename.
You can find information about how to handle this issue in the security team's documentation.
1 ignored issue:
The sendRequest method in HTTPClient Class in file /inc/HTTPClient.php in DokuWiki 2016-06-26a and older, when media file fetching is enabled, has no way to restrict access to private networks. This allows users to scan ports of internal networks via SSRF, such as 10.0.0.1/8, 172.16.0.0/12, and 192.168.0.0/16.