diff --git a/meta-networking/recipes-support/tinyproxy/tinyproxy/CVE-2026-54387.patch b/meta-networking/recipes-support/tinyproxy/tinyproxy/CVE-2026-54387.patch
new file mode 100644
index 0000000000..b12572f0ad
--- /dev/null
+++ b/meta-networking/recipes-support/tinyproxy/tinyproxy/CVE-2026-54387.patch
@@ -0,0 +1,37 @@
+From a9602e492cedd5d5d18dd3675d9be90e9b0d9e66 Mon Sep 17 00:00:00 2001
+From: rofl0r <rofl0r@users.noreply.github.com>
+Date: Thu, 7 May 2026 16:33:11 +0000
+Subject: [PATCH] reqs: prevent request smuggling via both content-length and
+ chunked
+
+addressing point 1 of #609
+
+(cherry picked from commit 623bfc093df009296f0b85d40bc677ef9d5c09bb)
+
+CVE: CVE-2026-54387
+Upstream-Statys: Backport [https://github.com/tinyproxy/tinyproxy/commit/623bfc093df009296f0b85d40bc677ef9d5c09bb]
+
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ src/reqs.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/src/reqs.c b/src/reqs.c
+index 8b68538..e3cfe76 100644
+--- a/src/reqs.c
++++ b/src/reqs.c
+@@ -942,8 +942,13 @@ process_client_headers (struct conn_s *connptr, pseudomap *hashofheaders)
+         connptr->content_length.client = get_content_length (hashofheaders);
+ 
+         /* Check whether client sends chunked data. */
+-        if (connptr->content_length.client == -1 && is_chunked_transfer (hashofheaders))
++        if (is_chunked_transfer (hashofheaders)) {
++                if (connptr->content_length.client != -1)
++                        /* request smuggling, see GH issue #609 */
++                        pseudomap_remove (hashofheaders, "content-length");
++
+                 connptr->content_length.client = -2;
++        }
+ 
+         /*
+          * See if there is a "Connection" header.  If so, we need to do a bit
diff --git a/meta-networking/recipes-support/tinyproxy/tinyproxy_1.11.3.bb b/meta-networking/recipes-support/tinyproxy/tinyproxy_1.11.3.bb
index 4ce766b40b..b8a508d8d4 100644
--- a/meta-networking/recipes-support/tinyproxy/tinyproxy_1.11.3.bb
+++ b/meta-networking/recipes-support/tinyproxy/tinyproxy_1.11.3.bb
@@ -10,6 +10,7 @@ SRC_URI = "https://github.com/${BPN}/${BPN}/releases/download/${PV}/${BP}.tar.gz
            file://CVE-2026-3945-1.patch \
            file://CVE-2026-3945-2.patch \
            file://CVE-2026-31842.patch \
+           file://CVE-2026-54387.patch \
            "
 
 SRC_URI[sha256sum] = "9bcf46db1a2375ff3e3d27a41982f1efec4706cce8899ff9f33323a8218f7592"