diff --git a/CHANGELOG.md b/CHANGELOG.md
index a12fdf048e9eb9e555a7cd18b692abe69f5bf421..2a226e2b68f9c059490ff255a91198b04504998d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,9 +31,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * [caosdb-server#174](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/174)
   GRPC-API: Server should gracefully handle non-file entities with file-like
   attributes.
+* [caosdb-server#220](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/220)
+  Entities can be retrieved via GRPC despite insufficient permissions.
+* [caosdb-server#223](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/223)
+  State is being leaked even though RETRIEVE:ENTITY permission is not granted.
 
 ### Security
 
+* Update of logging backend log4j to 2.17.2
+* Fix for [caosdb-server#220](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/220)
+  Entities can be retrieved via GRPC despite insufficient permissions.
+* Fix for [caosdb-server#223](https://gitlab.indiscale.com/caosdb/src/caosdb-server/-/issues/223)
+  State is being leaked even though RETRIEVE:ENTITY permission is not granted.
 
 ## [v0.7.1] - 2021-12-13
 (Timm Fitschen)
diff --git a/pom.xml b/pom.xml
index 1d665fcea44e070f38afb1cc17da3086916cc108..733a5b4ca3c741fef0d611885327545eee8c0129 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
     <grpc.version>1.42.1</grpc.version>
     <netty-tcnative.version>2.0.34.Final</netty-tcnative.version>
     <restlet.version>2.4.3</restlet.version>
-    <log4j.version>2.15.0</log4j.version>
+    <log4j.version>2.17.2</log4j.version>
   </properties>
   <repositories>
     <repository>