diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 932edd3e8..3b2587547 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -49,6 +49,8 @@ Other Changes:
   EndTable() was mistakenly restoring a wrong current table.
 - InputText: avoid continuously overwriting ownership of ImGuiKey_Enter/_KeypadEnter
   keys in order to allow e.g. external Shortcut override behavior. (#9004)
+- InputText: when using a callback to reduce/manipulate the value of BufTextLen,
+  we do not require anymore that CursorPos be clamped by user code. (#9029)
 - InputTextMultiline: fixed a crash when using ImGuiInputTextFlags_WordWrap and
   resizing the parent window while keeping the multi-line field active (which is
   most typically achieved when resizing programmatically or via a docking layout
diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp
index 910c73d36..97fb208ee 100644
--- a/imgui_widgets.cpp
+++ b/imgui_widgets.cpp
@@ -5274,11 +5274,12 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                     IM_ASSERT(callback_data.Buf == callback_buf);         // Invalid to modify those fields
                     IM_ASSERT(callback_data.BufSize == state->BufCapacity);
                     IM_ASSERT(callback_data.Flags == flags);
-                    const bool buf_dirty = callback_data.BufDirty;
-                    if (buf_dirty || callback_data.CursorPos != state->Stb->cursor)             { state->Stb->cursor = callback_data.CursorPos; state->CursorFollow = true; }
-                    if (buf_dirty || callback_data.SelectionStart != state->Stb->select_start)  { state->Stb->select_start = (callback_data.SelectionStart == callback_data.CursorPos) ? state->Stb->cursor : callback_data.SelectionStart; }
-                    if (buf_dirty || callback_data.SelectionEnd != state->Stb->select_end)      { state->Stb->select_end = (callback_data.SelectionEnd == callback_data.SelectionStart) ? state->Stb->select_start : callback_data.SelectionEnd; }
-                    if (buf_dirty)
+                    if (callback_data.BufDirty || callback_data.CursorPos != state->Stb->cursor)
+                        state->CursorFollow = true;
+                    state->Stb->cursor = ImClamp(callback_data.CursorPos, 0, callback_data.BufTextLen);
+                    state->Stb->select_start = ImClamp(callback_data.SelectionStart, 0, callback_data.BufTextLen);
+                    state->Stb->select_end = ImClamp(callback_data.SelectionEnd, 0, callback_data.BufTextLen);
+                    if (callback_data.BufDirty)
                     {
                         // Callback may update buffer and thus set buf_dirty even in read-only mode.
                         IM_ASSERT(callback_data.BufTextLen == (int)ImStrlen(callback_data.Buf)); // You need to maintain BufTextLen if you change the text!