diff --git a/.changelog/19878.txt b/.changelog/19878.txt
new file mode 100644
index 000000000..aa3843f2e
--- /dev/null
+++ b/.changelog/19878.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+ui: Fix an issue where a same-named task from a different group could be selected when the user clicks Exec from a task group page where multiple allocations would be valid
+```
diff --git a/ui/app/controllers/exec.js b/ui/app/controllers/exec.js
index af558f66e..c55e63ffe 100644
--- a/ui/app/controllers/exec.js
+++ b/ui/app/controllers/exec.js
@@ -80,7 +80,10 @@ export default class ExecController extends Controller {
     if (this.allocationShortId) {
       allocation = this.allocations.findBy('shortId', this.allocationShortId);
     } else {
-      allocation = this.allocations.find((allocation) =>
+      let allocationPool = this.taskGroupName
+        ? this.allocations.filterBy('taskGroupName', this.taskGroupName)
+        : this.allocations;
+      allocation = allocationPool.find((allocation) =>
         allocation.states
           .filterBy('isActive')
           .mapBy('name')