From dee376d72fd821b8c041d76abd0a888afd02d6ee Mon Sep 17 00:00:00 2001
From: Alleysira <1367108378@qq.com>
Date: Fri, 31 Jul 2026 20:48:43 +0800
Subject: [PATCH] fix: reject blob sidecar with slot not higher than parent

The gossip validator classified a blob sidecar whose slot is <= its known parent's slot as IGNORE, but the Deneb p2p spec requires REJECT (validate_gossip_blob_sidecar). The data-column sidecar path already uses REJECT for the same condition.
---
 packages/beacon-node/src/chain/validation/blobSidecar.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/beacon-node/src/chain/validation/blobSidecar.ts b/packages/beacon-node/src/chain/validation/blobSidecar.ts
index 1670e3c0b5e3..d5a20fcf4034 100644
--- a/packages/beacon-node/src/chain/validation/blobSidecar.ts
+++ b/packages/beacon-node/src/chain/validation/blobSidecar.ts
@@ -111,7 +111,7 @@ export async function validateGossipBlobSidecar(
 
   // [REJECT] The blob is from a higher slot than its parent.
   if (parentBlock.slot >= blobSlot) {
-    throw new BlobSidecarGossipError(GossipAction.IGNORE, {
+    throw new BlobSidecarGossipError(GossipAction.REJECT, {
       code: BlobSidecarErrorCode.NOT_LATER_THAN_PARENT,
       parentSlot: parentBlock.slot,
       slot: blobSlot,