diff --git a/src/lib/features/metrics/client-metrics/client-metrics-store-v2-type.ts b/src/lib/features/metrics/client-metrics/client-metrics-store-v2-type.ts
index 18d1900ed1..b4a7c6e90e 100644
--- a/src/lib/features/metrics/client-metrics/client-metrics-store-v2-type.ts
+++ b/src/lib/features/metrics/client-metrics/client-metrics-store-v2-type.ts
@@ -48,4 +48,5 @@ export interface IClientMetricsStoreV2
         variantCount: number;
     }>;
     aggregateDailyMetrics(): Promise<void>;
+    getFeatureFlagNames(): Promise<string[]>;
 }
diff --git a/src/lib/features/metrics/client-metrics/client-metrics-store-v2.ts b/src/lib/features/metrics/client-metrics/client-metrics-store-v2.ts
index 4ec3abde5e..79bf70b825 100644
--- a/src/lib/features/metrics/client-metrics/client-metrics-store-v2.ts
+++ b/src/lib/features/metrics/client-metrics/client-metrics-store-v2.ts
@@ -33,6 +33,8 @@ const DAILY_TABLE = 'client_metrics_env_daily';
 const HOURLY_TABLE_VARIANTS = 'client_metrics_env_variants';
 const DAILY_TABLE_VARIANTS = 'client_metrics_env_variants_daily';
 
+const FEATURES_TABLE = 'features';
+
 const fromRow = (row: ClientMetricsEnvTable) => ({
     featureName: row.feature_name,
     appName: row.app_name,
@@ -153,6 +155,11 @@ export class ClientMetricsStoreV2 implements IClientMetricsStoreV2 {
         throw new NotFoundError(`Could not find metric`);
     }
 
+    //TODO: Consider moving this to a specific feature store
+    async getFeatureFlagNames(): Promise<string[]> {
+        return this.db(FEATURES_TABLE).distinct('name').pluck('name');
+    }
+
     async getAll(query: Object = {}): Promise<IClientMetricsEnv[]> {
         const rows = await this.db<ClientMetricsEnvTable>(HOURLY_TABLE)
             .select('*')
diff --git a/src/lib/features/metrics/client-metrics/fake-client-metrics-store-v2.ts b/src/lib/features/metrics/client-metrics/fake-client-metrics-store-v2.ts
index 5af1a473f6..caabf77956 100644
--- a/src/lib/features/metrics/client-metrics/fake-client-metrics-store-v2.ts
+++ b/src/lib/features/metrics/client-metrics/fake-client-metrics-store-v2.ts
@@ -17,6 +17,11 @@ export default class FakeClientMetricsStoreV2
         super();
         this.setMaxListeners(0);
     }
+
+    getFeatureFlagNames(): Promise<string[]> {
+        throw new Error('Method not implemented.');
+    }
+
     getSeenTogglesForApp(
         appName: string,
         hoursBack?: number,
diff --git a/src/lib/features/metrics/client-metrics/metrics-service-v2.ts b/src/lib/features/metrics/client-metrics/metrics-service-v2.ts
index c002ef3fbe..9e8114b605 100644
--- a/src/lib/features/metrics/client-metrics/metrics-service-v2.ts
+++ b/src/lib/features/metrics/client-metrics/metrics-service-v2.ts
@@ -11,7 +11,7 @@ import type {
     IClientMetricsStoreV2,
 } from './client-metrics-store-v2-type';
 import { clientMetricsSchema } from '../shared/schema';
-import { compareAsc } from 'date-fns';
+import { compareAsc, secondsToMilliseconds } from 'date-fns';
 import { CLIENT_METRICS, CLIENT_REGISTER } from '../../../types/events';
 import ApiUser, { type IApiUser } from '../../../types/api-user';
 import { ALL } from '../../../types/models/api-token';
@@ -25,6 +25,7 @@ import {
 } from '../../../util/time-utils';
 import type { ClientMetricsSchema } from '../../../../lib/openapi';
 import { nameSchema } from '../../../schema/feature-schema';
+import memoizee from 'memoizee';
 
 export default class ClientMetricsServiceV2 {
     private config: IUnleashConfig;
@@ -39,6 +40,8 @@ export default class ClientMetricsServiceV2 {
 
     private logger: Logger;
 
+    private cachedFeatureNames: () => Promise<string[]>;
+
     constructor(
         { clientMetricsStoreV2 }: Pick<IUnleashStores, 'clientMetricsStoreV2'>,
         config: IUnleashConfig,
@@ -51,6 +54,13 @@ export default class ClientMetricsServiceV2 {
             '/services/client-metrics/client-metrics-service-v2.ts',
         );
         this.flagResolver = config.flagResolver;
+        this.cachedFeatureNames = memoizee(
+            async () => this.clientMetricsStoreV2.getFeatureFlagNames(),
+            {
+                promise: true,
+                maxAge: secondsToMilliseconds(10),
+            },
+        );
     }
 
     async clearMetrics(hoursAgo: number) {
@@ -103,6 +113,27 @@ export default class ClientMetricsServiceV2 {
         }
     }
 
+    async filterExistingToggleNames(toggleNames: string[]): Promise<string[]> {
+        if (this.flagResolver.isEnabled('filterExistingFlagNames')) {
+            try {
+                const validNames = await this.cachedFeatureNames();
+
+                const existingNames = toggleNames.filter((name) =>
+                    validNames.includes(name),
+                );
+                if (existingNames.length !== toggleNames.length) {
+                    this.logger.warn(
+                        `Filtered out ${toggleNames.length - existingNames.length} toggles with non-existing names`,
+                    );
+                }
+                return this.filterValidToggleNames(existingNames);
+            } catch (e) {
+                this.logger.error(e);
+            }
+        }
+        return this.filterValidToggleNames(toggleNames);
+    }
+
     async filterValidToggleNames(toggleNames: string[]): Promise<string[]> {
         const nameValidations: Promise<
             PromiseFulfilledResult<{ name: string }> | PromiseRejectedResult
@@ -151,7 +182,7 @@ export default class ClientMetricsServiceV2 {
         );
 
         const validatedToggleNames =
-            await this.filterValidToggleNames(toggleNames);
+            await this.filterExistingToggleNames(toggleNames);
 
         this.logger.debug(
             `Got ${toggleNames.length} (${validatedToggleNames.length} valid) metrics from ${clientIp}`,
diff --git a/src/lib/types/experimental.ts b/src/lib/types/experimental.ts
index 67727f239b..fcd353b0ad 100644
--- a/src/lib/types/experimental.ts
+++ b/src/lib/types/experimental.ts
@@ -23,6 +23,7 @@ export type IFlagKey =
     | 'disableNotifications'
     | 'advancedPlayground'
     | 'filterInvalidClientMetrics'
+    | 'filterExistingFlagNames'
     | 'disableMetrics'
     | 'signals'
     | 'automatedActions'
@@ -129,6 +130,10 @@ const flags: IFlags = {
         process.env.FILTER_INVALID_CLIENT_METRICS,
         false,
     ),
+    filterExistingFlagNames: parseEnvVarBoolean(
+        process.env.FILTER_INVALID_CLIENT_METRICS,
+        false,
+    ),
     disableMetrics: parseEnvVarBoolean(
         process.env.UNLEASH_EXPERIMENTAL_DISABLE_METRICS,
         false,
diff --git a/src/server-dev.ts b/src/server-dev.ts
index a7c7cb60b5..41ef4e1214 100644
--- a/src/server-dev.ts
+++ b/src/server-dev.ts
@@ -58,6 +58,7 @@ process.nextTick(async () => {
                         uniqueSdkTracking: true,
                         frontendHeaderRedesign: true,
                         dataUsageMultiMonthView: true,
+                        filterExistingFlagNames: true,
                     },
                 },
                 authentication: {