diff --git a/.changeset/light-squids-eat.md b/.changeset/light-squids-eat.md
new file mode 100644
index 0000000000..3676f94081
--- /dev/null
+++ b/.changeset/light-squids-eat.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': patch
+---
+
+Fixed an issue causing actions to fail when retrieving auth credentials
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/NunjucksWorkflowRunner.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/NunjucksWorkflowRunner.ts
index fbd3813163..81897a96f8 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/NunjucksWorkflowRunner.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/NunjucksWorkflowRunner.ts
@@ -434,7 +434,7 @@ export class NunjucksWorkflowRunner implements WorkflowRunner {
           user: task.spec.user,
           isDryRun: task.isDryRun,
           signal: task.cancelSignal,
-          getInitiatorCredentials: task.getInitiatorCredentials,
+          getInitiatorCredentials: () => task.getInitiatorCredentials(),
         });
       }
 
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
index 29a22716ba..e9a408d9d6 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/StorageTaskBroker.ts
@@ -28,7 +28,7 @@ import {
   TaskCompletionState,
   TaskContext,
 } from '@backstage/plugin-scaffolder-node';
-import { TaskStore } from './types';
+import { InternalTaskSecrets, TaskStore } from './types';
 import { readDuration } from './helper';
 import {
   AuthService,
@@ -179,8 +179,10 @@ export class TaskManager implements TaskContext {
   }
 
   async getInitiatorCredentials(): Promise<BackstageCredentials> {
-    if (this.task.secrets && '__initiatorCredentials' in this.task.secrets) {
-      return JSON.parse(this.task.secrets.__initiatorCredentials);
+    const secrets = this.task.secrets as InternalTaskSecrets;
+
+    if (secrets && secrets.__initiatorCredentials) {
+      return JSON.parse(secrets.__initiatorCredentials);
     }
     if (!this.auth) {
       throw new Error(
diff --git a/plugins/scaffolder-backend/src/scaffolder/tasks/types.ts b/plugins/scaffolder-backend/src/scaffolder/tasks/types.ts
index c0854af391..aa647d8bd6 100644
--- a/plugins/scaffolder-backend/src/scaffolder/tasks/types.ts
+++ b/plugins/scaffolder-backend/src/scaffolder/tasks/types.ts
@@ -228,3 +228,10 @@ export type TaskTrackType = {
     action: TemplateAction<JsonObject>,
   ) => Promise<void>;
 };
+
+/**
+ * @internal
+ */
+export type InternalTaskSecrets = TaskSecrets & {
+  __initiatorCredentials: string;
+};
diff --git a/plugins/scaffolder-backend/src/service/router.test.ts b/plugins/scaffolder-backend/src/service/router.test.ts
index d3cb2d1897..2118f46b22 100644
--- a/plugins/scaffolder-backend/src/service/router.test.ts
+++ b/plugins/scaffolder-backend/src/service/router.test.ts
@@ -316,7 +316,7 @@ describe('createRouter', () => {
             createdBy: 'user:default/mock',
             secrets: {
               backstageToken: token,
-              initiatorCredentials: JSON.stringify(credentials),
+              __initiatorCredentials: JSON.stringify(credentials),
             },
 
             spec: {
@@ -455,7 +455,7 @@ describe('createRouter', () => {
           createdAt: '',
           secrets: {
             backstageToken: token,
-            initiatorCredentials: JSON.stringify(credentials),
+            __initiatorCredentials: JSON.stringify(credentials),
           },
           createdBy: '',
         });
@@ -925,7 +925,7 @@ data: {"id":1,"taskId":"a-random-id","type":"completion","createdAt":"","body":{
             createdBy: 'user:default/mock',
             secrets: {
               backstageToken: token,
-              initiatorCredentials: JSON.stringify(credentials),
+              __initiatorCredentials: JSON.stringify(credentials),
             },
 
             spec: {
@@ -995,7 +995,7 @@ data: {"id":1,"taskId":"a-random-id","type":"completion","createdAt":"","body":{
             createdBy: 'user:default/mock',
             secrets: {
               backstageToken: token,
-              initiatorCredentials: JSON.stringify(credentials),
+              __initiatorCredentials: JSON.stringify(credentials),
             },
 
             spec: {
@@ -1084,7 +1084,7 @@ data: {"id":1,"taskId":"a-random-id","type":"completion","createdAt":"","body":{
             createdBy: 'user:default/mock',
             secrets: {
               backstageToken: token,
-              initiatorCredentials: JSON.stringify(credentials),
+              __initiatorCredentials: JSON.stringify(credentials),
             },
 
             spec: {
@@ -1220,7 +1220,7 @@ data: {"id":1,"taskId":"a-random-id","type":"completion","createdAt":"","body":{
           createdAt: '',
           secrets: {
             backstageToken: token,
-            initiatorCredentials: JSON.stringify(credentials),
+            __initiatorCredentials: JSON.stringify(credentials),
           },
           createdBy: '',
         });
diff --git a/plugins/scaffolder-backend/src/service/router.ts b/plugins/scaffolder-backend/src/service/router.ts
index 50f6fc372f..43618ed5a7 100644
--- a/plugins/scaffolder-backend/src/service/router.ts
+++ b/plugins/scaffolder-backend/src/service/router.ts
@@ -88,6 +88,7 @@ import {
   IdentityApi,
   IdentityApiGetIdentityRequest,
 } from '@backstage/plugin-auth-node';
+import { InternalTaskSecrets } from '../scaffolder/tasks/types';
 
 /**
  *
@@ -523,14 +524,16 @@ export async function createRouter(
         },
       };
 
+      const secrets: InternalTaskSecrets = {
+        ...req.body.secrets,
+        backstageToken: token,
+        __initiatorCredentials: JSON.stringify(credentials),
+      };
+
       const result = await taskBroker.dispatch({
         spec: taskSpec,
         createdBy: userEntityRef,
-        secrets: {
-          ...req.body.secrets,
-          backstageToken: token,
-          initiatorCredentials: JSON.stringify(credentials),
-        },
+        secrets,
       });
 
       res.status(201).json({ id: result.taskId });