diff --git a/.build/dependency-check-suppressions.xml b/.build/dependency-check-suppressions.xml
index 45b8e41835..8c5cf0f592 100644
--- a/.build/dependency-check-suppressions.xml
+++ b/.build/dependency-check-suppressions.xml
@@ -30,6 +30,10 @@
         <cve>CVE-2022-38751</cve>
         <cve>CVE-2022-38752</cve>
         <cve>CVE-2022-41854</cve>
+        <cve>CVE-2021-1471</cve>
+        <cve>CVE-2021-3064</cve>
+        <cve>CVE-2021-4235</cve>
+        <cve>CVE-2017-18640</cve>
     </suppress>
 
     <!-- https://issues.apache.org/jira/browse/CASSANDRA-15417 -->
diff --git a/CHANGES.txt b/CHANGES.txt
index fd15a7f770..5a59323aa0 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,7 @@
 3.11.15
  * Fix Splitter sometimes creating more splits than requested (CASSANDRA-18013)
 Merged from 3.0:
+ * Suppress CVE-2021-1471, CVE-2021-3064, CVE-2021-4235 (CASSANDRA-18149)
  * Switch to snakeyaml's SafeConstructor (CASSANDRA-18150)
  * Expand build.dir property in rat targets (CASSANDRA-18183)
  * Suppress CVE-2022-41881 (CASSANDRA-18148)