diff --git a/services/web/app/src/Features/SplitTests/SplitTestHandler.js b/services/web/app/src/Features/SplitTests/SplitTestHandler.js
index 491c236a3c..5dcf00967b 100644
--- a/services/web/app/src/Features/SplitTests/SplitTestHandler.js
+++ b/services/web/app/src/Features/SplitTests/SplitTestHandler.js
@@ -150,6 +150,14 @@ async function hasUserBeenAssignedToVariant(
     const splitTest = await _getSplitTest(splitTestName)
     const currentVersion = SplitTestUtils.getCurrentVersion(splitTest)
 
+    if (
+      !userId ||
+      !SessionManager.isUserLoggedIn(session) ||
+      !currentVersion?.active
+    ) {
+      return false
+    }
+
     // Check the query string for an override, ignoring an invalid value
     const queryVariant = query[splitTestName]
     if (queryVariant === variant) {
diff --git a/services/web/test/unit/src/SplitTests/SplitTestHandlerTests.js b/services/web/test/unit/src/SplitTests/SplitTestHandlerTests.js
index 7fa6fd4003..a682f0c954 100644
--- a/services/web/test/unit/src/SplitTests/SplitTestHandlerTests.js
+++ b/services/web/test/unit/src/SplitTests/SplitTestHandlerTests.js
@@ -55,12 +55,17 @@ describe('SplitTestHandler', function () {
     }
     this.SplitTestSessionHandler = {
       collectSessionStats: sinon.stub(),
+      getCachedVariant: sinon.stub(),
+      setVariantInCache: sinon.stub(),
     }
     this.SplitTestUserGetter = {
       promises: {
         getUser: sinon.stub().resolves(null),
       },
     }
+    this.SessionManager = {
+      isUserLoggedIn: sinon.stub().returns(false),
+    }
 
     this.SplitTestHandler = SandboxedModule.require(MODULE_PATH, {
       requires: {
@@ -72,6 +77,7 @@ describe('SplitTestHandler', function () {
         './LocalsHelper': this.LocalsHelper,
         './SplitTestSessionHandler': this.SplitTestSessionHandler,
         './SplitTestUserGetter': this.SplitTestUserGetter,
+        '../Authentication/SessionManager': this.SessionManager,
         '@overleaf/settings': this.Settings,
       },
     })
@@ -105,6 +111,7 @@ describe('SplitTestHandler', function () {
         },
       }
       this.SplitTestUserGetter.promises.getUser.resolves(this.user)
+      this.SessionManager.isUserLoggedIn.returns(true)
       this.assignments =
         await this.SplitTestHandler.promises.getActiveAssignmentsForUser(
           this.user._id