diff --git a/meta-oe/recipes-connectivity/libwebsockets/libwebsockets/CVE-2026-19773.patch b/meta-oe/recipes-connectivity/libwebsockets/libwebsockets/CVE-2026-19773.patch
new file mode 100644
index 0000000000..74908c5437
--- /dev/null
+++ b/meta-oe/recipes-connectivity/libwebsockets/libwebsockets/CVE-2026-19773.patch
@@ -0,0 +1,31 @@
+From 998a9af40aa6c2ddcb91c662d6585ea80ab52f85 Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@warmcat.com>
+Date: Fri, 3 Jul 2026 18:43:25 +0100
+Subject: [PATCH] zdi-can-31036: h2 bounds check on server
+
+This vulnerability was discovered by:
+Maher Azzouzi working with TrendAI Zero Day Initiative
+
+(cherry picked from commit 824151862f37bc72f46d9a3e01d5b9408d313a0b)
+
+CVE: CVE-2026-19773
+Upstream-Status: Backport [https://github.com/warmcat/libwebsockets/commit/824151862f37bc72f46d9a3e01d5b9408d313a0b]
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ lib/roles/h2/hpack.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/lib/roles/h2/hpack.c b/lib/roles/h2/hpack.c
+index 1025faa6f..863eb88c9 100644
+--- a/lib/roles/h2/hpack.c
++++ b/lib/roles/h2/hpack.c
+@@ -274,6 +274,9 @@ static int lws_frag_append(struct lws *wsi, unsigned char c)
+ {
+ 	struct allocated_headers *ah = wsi->http.ah;
+ 
++	if ((unsigned int)ah->pos >= wsi->a.context->max_http_header_data)
++		return 1;
++
+ 	ah->data[ah->pos++] = (char)c;
+ 	ah->frags[ah->nfrag].len++;
+ 
diff --git a/meta-oe/recipes-connectivity/libwebsockets/libwebsockets_4.5.8.bb b/meta-oe/recipes-connectivity/libwebsockets/libwebsockets_4.5.8.bb
index bca2663419..6a3d0b4033 100644
--- a/meta-oe/recipes-connectivity/libwebsockets/libwebsockets_4.5.8.bb
+++ b/meta-oe/recipes-connectivity/libwebsockets/libwebsockets_4.5.8.bb
@@ -10,6 +10,7 @@ SRCREV = "fbb0baf6af9c4324f0f1591734c78b0089b599d4"
 SRC_URI = " \
     git://github.com/warmcat/libwebsockets.git;protocol=https;branch=v4.5-stable;tag=v${PV} \
     file://CVE-2026-10650.patch \
+    file://CVE-2026-19773.patch \
 "
 
 UPSTREAM_CHECK_URI = "https://github.com/warmcat/${BPN}/releases"