Potential Remote Code Execution via Twig SSTI

You must have administrator access and ALLOW_ADMIN_CHANGES must be enabled for this to work.

https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production

Note: This is a follow-up to GHSA-f3cw-hg6r-chfv

Users should update to the patched versions (4.14.13 and 5.6.15) to mitigate the issue.

References

#17026