diff --git a/src/api/management/src/request/dashboards/timed_annotations.rs b/src/api/management/src/request/dashboards/timed_annotations.rs
index 185917140b..614aa944e9 100644
--- a/src/api/management/src/request/dashboards/timed_annotations.rs
+++ b/src/api/management/src/request/dashboards/timed_annotations.rs
@@ -303,7 +303,13 @@ pub async fn delete_annotation_panels(
     if panels.is_empty() {
         return MetaHttpResponse::bad_request("panels cannot be empty".to_string());
     }
-    match timed_annotations::delete_timed_annotation_panels(&timed_annotation_id, panels).await {
+    match timed_annotations::delete_timed_annotation_panels(
+        &dashboard_id,
+        &timed_annotation_id,
+        panels,
+    )
+    .await
+    {
         Ok(_) => (StatusCode::OK, "").into_response(),
         Err(e) => {
             log::error!("Error deleting timed annotation panels: {e}");
diff --git a/src/core/src/dashboards/timed_annotations.rs b/src/core/src/dashboards/timed_annotations.rs
index 1166adf0da..02359739d3 100644
--- a/src/core/src/dashboards/timed_annotations.rs
+++ b/src/core/src/dashboards/timed_annotations.rs
@@ -95,13 +95,19 @@ pub async fn update_timed_annotations(
 
 #[tracing::instrument]
 pub async fn delete_timed_annotation_panels(
+    dashboard_id: &str,
     timed_annotation_id: &str,
     panels: Vec<String>,
 ) -> Result<(), anyhow::Error> {
     if panels.is_empty() {
         return Err(anyhow::anyhow!("panels cannot be empty"));
     }
-    table::timed_annotation_panels::delete_many_panels(timed_annotation_id, panels.clone()).await?;
+    table::timed_annotation_panels::delete_many_panels_in_dashboard(
+        dashboard_id,
+        timed_annotation_id,
+        panels.clone(),
+    )
+    .await?;
     #[cfg(feature = "enterprise")]
     super_cluster::emit_timed_annotation_panels_delete_event(timed_annotation_id, panels).await?;
 
diff --git a/src/infra/src/table/timed_annotation_panels.rs b/src/infra/src/table/timed_annotation_panels.rs
index 2726668890..86f5f8c4b5 100644
--- a/src/infra/src/table/timed_annotation_panels.rs
+++ b/src/infra/src/table/timed_annotation_panels.rs
@@ -16,7 +16,7 @@
 use config::ider;
 use sea_orm::{ColumnTrait, EntityTrait, QueryFilter, Set, TransactionTrait};
 
-use super::entity::timed_annotation_panels;
+use super::entity::{dashboards, timed_annotation_panels, timed_annotations};
 use crate::{
     db::{get_orm_client_ro, get_orm_client_rw},
     errors,
@@ -62,6 +62,8 @@ pub async fn insert_many_panels(
     Ok(())
 }
 
+/// Unscoped: only for replaying a delete the originating cluster already authorized. Callers
+/// serving a user request must use [`delete_many_panels_in_dashboard`].
 pub async fn delete_many_panels(
     timed_annotation_id: &str,
     panel_ids: Vec<String>,
@@ -83,3 +85,38 @@ pub async fn delete_many_panels(
 
     Ok(())
 }
+
+/// Removes panel associations only when the annotation belongs to the given dashboard.
+pub async fn delete_many_panels_in_dashboard(
+    dashboard_id: &str,
+    timed_annotation_id: &str,
+    panel_ids: Vec<String>,
+) -> Result<(), errors::Error> {
+    if panel_ids.is_empty() {
+        return Ok(());
+    }
+
+    let client = get_orm_client_rw().await;
+    let dashboard_record = dashboards::Entity::find()
+        .filter(dashboards::Column::DashboardId.eq(dashboard_id))
+        .one(client)
+        .await?
+        .ok_or_else(|| {
+            errors::Error::DbError(errors::DbError::KeyNotExists(format!(
+                "Dashboard '{dashboard_id}' not found"
+            )))
+        })?;
+
+    timed_annotations::Entity::find()
+        .filter(timed_annotations::Column::Id.eq(timed_annotation_id))
+        .filter(timed_annotations::Column::DashboardId.eq(dashboard_record.id))
+        .one(client)
+        .await?
+        .ok_or_else(|| {
+            errors::Error::DbError(errors::DbError::KeyNotExists(format!(
+                "TimedAnnotation with ID {timed_annotation_id} not found in dashboard {dashboard_id}"
+            )))
+        })?;
+
+    delete_many_panels(timed_annotation_id, panel_ids).await
+}