An attacker with
Users are strongly advised to upgrade to a patched version.
MoinMoin Wiki 1.9.11 has the necessary fixes and also contains other important fixes.
It is not advised to work around this, but to upgrade MoinMoin to a patched version.
That said, a work around via a Content Security Policy in the web server might be possible.
Also, it is of course helpful if you give
write permissions (which include uploading attachments) only to trusted users.
If you have any questions or comments about this advisory, email me at firstname.lastname@example.org.
This vulnerability was discovered by:
Catarina Leite from the Checkmarx SCA AppSec team