diff --git a/meta-networking/recipes-support/unbound/unbound/CVE-2026-54478.patch b/meta-networking/recipes-support/unbound/unbound/CVE-2026-54478.patch
new file mode 100644
index 0000000000..3580815477
--- /dev/null
+++ b/meta-networking/recipes-support/unbound/unbound/CVE-2026-54478.patch
@@ -0,0 +1,38 @@
+From 44af1c8b392afb7d14ae0814fb9c6c037a5bf18a Mon Sep 17 00:00:00 2001
+From: "W.C.A. Wijngaards" <wouter@nlnetlabs.nl>
+Date: Wed, 22 Jul 2026 10:16:42 +0200
+Subject: [PATCH] - Fix CVE-2026-54478, DNS Cookie bypass when combined with  
+ proxy-protocol use. Thanks to Qifan Zhang, Palo Alto Networks,   for the
+ report.
+
+(cherry picked from commit 8a15ffee620bce05fbfd2c69b0d4c31c10a02431)
+
+CVE: CVE-2026-54478
+Upstream-Status: Backport [https://github.com/NLnetLabs/unbound/commit/8a15ffee620bce05fbfd2c69b0d4c31c10a02431]
+
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ util/data/msgparse.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/util/data/msgparse.c b/util/data/msgparse.c
+index 169709b7e..3dc2e1264 100644
+--- a/util/data/msgparse.c
++++ b/util/data/msgparse.c
+@@ -1068,13 +1068,13 @@ parse_edns_options_from_query(uint8_t* rdata_ptr, size_t rdata_len,
+ 			 * purposes. It will be overwritten if (re)creation
+ 			 * is needed.
+ 			 */
+-			if(repinfo->remote_addr.ss_family == AF_INET) {
++			if(repinfo->client_addr.ss_family == AF_INET) {
+ 				memcpy(server_cookie + 16,
+-					&((struct sockaddr_in*)&repinfo->remote_addr)->sin_addr, 4);
++					&((struct sockaddr_in*)&repinfo->client_addr)->sin_addr, 4);
+ 			} else {
+ 				cookie_is_v4 = 0;
+ 				memcpy(server_cookie + 16,
+-					&((struct sockaddr_in6*)&repinfo->remote_addr)->sin6_addr, 16);
++					&((struct sockaddr_in6*)&repinfo->client_addr)->sin6_addr, 16);
+ 			}
+ 
+ 			if(cfg->cookie_secret_file &&
diff --git a/meta-networking/recipes-support/unbound/unbound_1.24.2.bb b/meta-networking/recipes-support/unbound/unbound_1.24.2.bb
index a03dcf4193..1e3bd6f5c6 100644
--- a/meta-networking/recipes-support/unbound/unbound_1.24.2.bb
+++ b/meta-networking/recipes-support/unbound/unbound_1.24.2.bb
@@ -35,6 +35,7 @@ SRC_URI = "git://github.com/NLnetLabs/unbound.git;protocol=https;branch=master;t
            file://CVE-2026-50251.patch \
            file://CVE-2026-50252.patch \
            file://CVE-2026-52863.patch \
+           file://CVE-2026-54478.patch \
            "
 
 SRCREV = "f6269baa605d31859f28770e01a24e3677e5f82c"