diff --git a/doc/source/vulnerability-actions/index.rst b/doc/source/vulnerability-actions/index.rst
index a4c3d4e39..12dd93a45 100644
--- a/doc/source/vulnerability-actions/index.rst
+++ b/doc/source/vulnerability-actions/index.rst
@@ -30,6 +30,11 @@ Check vulnerabilities action
 
    #. Run the script by running ``python check_vulnerabilities.py --run-local``.
 
+.. warning::
+
+   The ``ansys/check-vulnerabilities`` action needs to be performed on a public repository.
+   If the repository is private, the action will fail due to denied access.
+
 
 .. jinja:: check-vulnerabilities