diff --git a/Cargo.lock b/Cargo.lock
index 4c12e6fb984..b3d1cd0d76d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2687,7 +2687,7 @@ dependencies = [
 
 [[package]]
 name = "libp2p-autonat"
-version = "0.13.0"
+version = "0.13.1"
 dependencies = [
  "async-std",
  "async-trait",
diff --git a/protocols/autonat/CHANGELOG.md b/protocols/autonat/CHANGELOG.md
index e171412aa58..f1aeda6ac18 100644
--- a/protocols/autonat/CHANGELOG.md
+++ b/protocols/autonat/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.13.1
+- Verify that an incoming AutoNAT dial comes from a connected peer. See [PR 5597](https://github.com/libp2p/rust-libp2p/pull/5597).
+
 ## 0.13.0
 
 - Due to the refactor of `Transport` it's no longer required to create a seperate transport for
diff --git a/protocols/autonat/Cargo.toml b/protocols/autonat/Cargo.toml
index 2c01d18dceb..0c0e757641d 100644
--- a/protocols/autonat/Cargo.toml
+++ b/protocols/autonat/Cargo.toml
@@ -3,7 +3,7 @@ name = "libp2p-autonat"
 edition = "2021"
 rust-version = { workspace = true }
 description = "NAT and firewall detection for libp2p"
-version = "0.13.0"
+version = "0.13.1"
 authors = ["David Craven <david@craven.ch>", "Elena Frank <elena.frank@protonmail.com>", "Hannes Furmans <hannes@umgefahren.xyz>"]
 license = "MIT"
 repository = "https://github.com/libp2p/rust-libp2p"
diff --git a/protocols/autonat/src/v1/behaviour/as_server.rs b/protocols/autonat/src/v1/behaviour/as_server.rs
index 3ecdd3ac26e..1289bd53d24 100644
--- a/protocols/autonat/src/v1/behaviour/as_server.rs
+++ b/protocols/autonat/src/v1/behaviour/as_server.rs
@@ -107,6 +107,21 @@ impl<'a> HandleInnerEvent for AsServer<'a> {
                     },
             } => {
                 let probe_id = self.probe_id.next();
+                if !self.connected.contains_key(&peer) {
+                    tracing::debug!(
+                        %peer,
+                        "Reject inbound dial request from peer since it is not connected"
+                    );
+
+                    return VecDeque::from([ToSwarm::GenerateEvent(Event::InboundProbe(
+                        InboundProbeEvent::Error {
+                            probe_id,
+                            peer,
+                            error: InboundProbeError::Response(ResponseError::DialRefused),
+                        },
+                    ))]);
+                }
+
                 match self.resolve_inbound_request(peer, request) {
                     Ok(addrs) => {
                         tracing::debug!(