diff --git a/CHANGELOG b/CHANGELOG
index d5b295cae..4d19caf0a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,8 @@
                      Changes in version 5.1.47
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 - output and check for reasonable values of upload_max_filesize, post_max_size and memory_limit
+- remove null bytes from login
+- remove null bytes from password when authenticating by ldap
 
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                      Changes in version 5.1.46