diff --git a/web/src/main/java/org/springframework/security/web/webauthn/jackson/AuthenticationExtensionsClientOutputsDeserializer.java b/web/src/main/java/org/springframework/security/web/webauthn/jackson/AuthenticationExtensionsClientOutputsDeserializer.java
index f1d18e6f23..3a46fe9ddd 100644
--- a/web/src/main/java/org/springframework/security/web/webauthn/jackson/AuthenticationExtensionsClientOutputsDeserializer.java
+++ b/web/src/main/java/org/springframework/security/web/webauthn/jackson/AuthenticationExtensionsClientOutputsDeserializer.java
@@ -56,11 +56,8 @@ class AuthenticationExtensionsClientOutputsDeserializer extends StdDeserializer<
 			throws IOException, JacksonException {
 		List<AuthenticationExtensionsClientOutput<?>> outputs = new ArrayList<>();
 		for (String key = parser.nextFieldName(); key != null; key = parser.nextFieldName()) {
-			JsonToken startObject = parser.nextValue();
-			if (startObject != JsonToken.START_OBJECT) {
-				break;
-			}
-			if (CredentialPropertiesOutput.EXTENSION_ID.equals(key)) {
+			JsonToken next = parser.nextToken();
+			if (next == JsonToken.START_OBJECT && CredentialPropertiesOutput.EXTENSION_ID.equals(key)) {
 				CredentialPropertiesOutput output = parser.readValueAs(CredentialPropertiesOutput.class);
 				outputs.add(output);
 			}
@@ -68,7 +65,9 @@ class AuthenticationExtensionsClientOutputsDeserializer extends StdDeserializer<
 				if (logger.isDebugEnabled()) {
 					logger.debug("Skipping unknown extension with id " + key);
 				}
-				parser.nextValue();
+				if (next.isStructStart()) {
+					parser.skipChildren();
+				}
 			}
 		}
 
diff --git a/web/src/test/java/org/springframework/security/web/webauthn/jackson/JacksonTests.java b/web/src/test/java/org/springframework/security/web/webauthn/jackson/JacksonTests.java
index ba970125e0..f93b4ecd3f 100644
--- a/web/src/test/java/org/springframework/security/web/webauthn/jackson/JacksonTests.java
+++ b/web/src/test/java/org/springframework/security/web/webauthn/jackson/JacksonTests.java
@@ -122,6 +122,47 @@ class JacksonTests {
 		assertThat(outputs).usingRecursiveComparison().isEqualTo(credProps);
 	}
 
+	@Test
+	void readAuthenticationExtensionsClientOutputsWhenAppId() throws Exception {
+		String json = """
+				{
+				  "appid": false,
+				  "credProps": {
+				    "rk": false
+				  }
+				}
+				""";
+		CredentialPropertiesOutput credProps = new CredentialPropertiesOutput(false);
+
+		AuthenticationExtensionsClientOutputs outputs = this.mapper.readValue(json,
+				AuthenticationExtensionsClientOutputs.class);
+		assertThat(outputs.getOutputs()).usingRecursiveFieldByFieldElementComparator().contains(credProps);
+	}
+
+	@Test
+	void readAuthenticationExtensionsClientOutputsWhenUnknownExtension() throws Exception {
+		String json = """
+				{
+				  "unknownObject1": {
+				    "key": "value"
+				  },
+				  "unknownArray": [
+				    { "key": "value1" },
+				    { "key": "value2" }
+				  ],
+				  "credProps": {
+				    "rk": false
+				  },
+				  "unknownObject2": {}
+				}
+				""";
+		CredentialPropertiesOutput credProps = new CredentialPropertiesOutput(false);
+
+		AuthenticationExtensionsClientOutputs outputs = this.mapper.readValue(json,
+				AuthenticationExtensionsClientOutputs.class);
+		assertThat(outputs.getOutputs()).usingRecursiveFieldByFieldElementComparator().contains(credProps);
+	}
+
 	@Test
 	void readAuthenticationExtensionsClientOutputsWhenFieldAfter() throws Exception {
 		String json = """