new file mode 100644
@@ -0,0 +1,47 @@
+From 6cd9ea8dcb5bf68a195e90578c7f05e12eba5468 Mon Sep 17 00:00:00 2001
+From: Rainer Jung <rjung@apache.org>
+Date: Wed, 17 Jun 2026 09:48:52 +0000
+Subject: [PATCH] mod_md: Add OpenSSL 4.0 compatibility
+
+* Use getters instead of direct member access.
+
+* Struct was made opaque in OpenSSL 4. Getters exist since OpenSSL 1.1.0.
+
+* Keep OpenSSL 1.0.2 compatibility.
+
+Merge from icing/md:
+https://github.com/icing/mod_md/commit/9fd90380db0722f0ccc14ff1c4da0ca21d4da75c
+
+Backport of r1935161 from trunk, [mod_md CTR]
+
+
+Upstream-Status: Backport [https://github.com/apache/httpd/commit/6cd9ea8dcb5bf68a195e90578c7f05e12eba5468]
+---
+diff --git a/modules/md/md_ocsp.c b/modules/md/md_ocsp.c
+index aee799a7b39..2e7f14dff31 100644
+--- a/modules/md/md_ocsp.c
++++ b/modules/md/md_ocsp.c
+@@ -533,13 +533,23 @@ static const char *certid_summary(const OCSP_CERTID *certid, apr_pool_t *p)
+ serial = issuer = key = "???";
+ OCSP_id_get0_info(&aname_hash, &amd_nid, &akey_hash, &aserial, (OCSP_CERTID*)certid);
+ if (aname_hash) {
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+ data.len = (apr_size_t)aname_hash->length;
+ data.data = (const char*)aname_hash->data;
++#else
++ data.len = (apr_size_t)ASN1_STRING_length(aname_hash);
++ data.data = (const char*)ASN1_STRING_get0_data(aname_hash);
++#endif
+ md_data_to_hex(&issuer, 0, p, &data);
+ }
+ if (akey_hash) {
++#if OPENSSL_VERSION_NUMBER < 0x10100000L
+ data.len = (apr_size_t)akey_hash->length;
+ data.data = (const char*)akey_hash->data;
++#else
++ data.len = (apr_size_t)ASN1_STRING_length(akey_hash);
++ data.data = (const char*)ASN1_STRING_get0_data(akey_hash);
++#endif
+ md_data_to_hex(&key, 0, p, &data);
+ }
+ if (aserial) {
@@ -16,6 +16,7 @@ SRC_URI = "${APACHE_MIRROR}/httpd/httpd-${PV}.tar.bz2 \
file://0008-Fix-perl-install-directory-to-usr-bin.patch \
file://0009-support-apxs.in-force-destdir-to-be-empty-string.patch \
file://0001-make_exports.awk-not-expose-the-path.patch \
+ file://0011-mod_md-Add-OpenSSL-4.0-compatibility.patch \
"
SRC_URI:append:class-target = " \