diff -up Linux-PAM-1.4.0/modules/pam_env/pam_env.8.xml.nouserenv Linux-PAM-1.4.0/modules/pam_env/pam_env.8.xml
--- Linux-PAM-1.4.0/modules/pam_env/pam_env.8.xml.nouserenv	2020-06-22 13:00:37.480755648 +0200
+++ Linux-PAM-1.4.0/modules/pam_env/pam_env.8.xml	2020-06-22 13:05:06.038501660 +0200
@@ -158,7 +158,10 @@
         <listitem>
           <para>
             Turns on or off the reading of the user specific environment
-            file. 0 is off, 1 is on. By default this option is off.
+            file. 0 is off, 1 is on. By default this option is off as user
+            supplied environment variables in the PAM environment could affect
+            behavior of subsequent modules in the stack without the consent
+            of the system administrator.
           </para>
         </listitem>
       </varlistentry>