diff --git a/dev-libs/poco/Manifest b/dev-libs/poco/Manifest
index ec8acbdee2aa0..5511f5b830a33 100644
--- a/dev-libs/poco/Manifest
+++ b/dev-libs/poco/Manifest
@@ -1,3 +1,4 @@
 DIST poco-1.14.2.tar.gz 12179163 BLAKE2B cc6bf5a9daa625f0de08b5bf2934c644fffa474578c075e2017a8f4ec12d47a322cc7dec3a1f44cc39d7012a54d01ec7601de4562a4826debd187e6c03b105a0 SHA512 3bd90fd270f8becc583e6615a9399a2abe6f1e06fd42cbb33fb8eac061ac29ba36c3831f0a88451c173c1fa0ef2505ddd773c29c842e4924be835f4f570b1468
 DIST poco-1.15.0.tar.gz 11214675 BLAKE2B f9a9b26cff7f7d9086475fc2e6ace4a82bd40d847c03459482717cfd1d08d269238a0166aaf14b69b4d94e4ab77a92f21a578859432ecb96fe746b89180d9acd SHA512 97aef122d28157cbf0990400290bbb6667cfac3207fa6144239a6c1868427e5531895a333d95eeec968b2cc55168dad977b74f76d5b80f9cd75a16b6f2d50552
 DIST poco-1.15.1.tar.gz 11287610 BLAKE2B 9d4c71a5a0d3d91ed0ade57196e157a99bc8231ea759e661bd5e26012249543a297cceadf5ebe8b530f7d5891850ba276c6e237f72cf78805651d64e00f22344 SHA512 03daecfb9f6baa25eac327ccaa2e2cf51aa1520d3d8c6c0399bc0c4be15cf71585ee0a8bca612ad26e5d79edf9367c1687060684632e0cab4dabb0f8d6aed1a8
+DIST poco-1.15.3.tar.gz 11385784 BLAKE2B d226f9e6185b38971c36d960003daac95970fa97536e2f6cf761c50f9cadbb39f4c853dcee807e9ddac89ae17f8fe1beade2963f177ccdd7b684d50e7c955090 SHA512 a7a8b1a92e5a15d5409b3db5ace8045cab987faa6ce7a4ac241a595dc558d4527d07fa166a184ad54ddb1919895d9d0e6a43f28b122beff91713c3748d96fb0c
diff --git a/dev-libs/poco/poco-1.15.3.ebuild b/dev-libs/poco/poco-1.15.3.ebuild
new file mode 100644
index 0000000000000..56eb5a474a36b
--- /dev/null
+++ b/dev-libs/poco/poco-1.15.3.ebuild
@@ -0,0 +1,135 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="C++ libraries for building network-based applications"
+HOMEPAGE="https://pocoproject.org/"
+SRC_URI="https://github.com/pocoproject/${PN}/archive/${P}-release.tar.gz -> ${P}.tar.gz"
+S="${WORKDIR}/${PN}-${P}-release"
+
+LICENSE="Boost-1.0"
+# SHARED_LIBRARY_VERSION -> "${S}"/libversion
+SLOT="0/123"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~x86"
+IUSE="7z activerecord avahi cppparser +crypt +data examples iodbc mariadb +mongodb mysql +net odbc +pagecompiler pdf pocodoc postgres prometheus sqlite test +util +xml +zip"
+RESTRICT="!test? ( test )"
+REQUIRED_USE="
+	activerecord? ( util xml )
+	7z? ( xml )
+	iodbc? ( odbc )
+	mongodb? ( data )
+	mysql? ( data )
+	odbc? ( data )
+	postgres? ( data )
+	pagecompiler? ( net util xml )
+	pocodoc? ( cppparser util xml )
+	sqlite? ( data )
+	crypt? ( util )
+	test? ( data? ( sqlite ) activerecord cppparser crypt pdf prometheus xml )
+"
+
+BDEPEND="
+	virtual/pkgconfig
+"
+
+RDEPEND="
+	>=dev-libs/libpcre2-10.40:=
+	dev-libs/libutf8proc:=
+
+	activerecord? ( !app-arch/arc )
+	avahi? ( net-dns/avahi:= )
+	mysql? ( dev-db/mysql-connector-c:= )
+	mariadb? ( dev-db/mariadb-connector-c:= )
+	postgres? ( dev-db/postgresql:= )
+	odbc? (
+		iodbc? ( dev-db/libiodbc )
+		!iodbc? ( dev-db/unixODBC )
+	)
+	pdf? ( media-libs/libpng:= )
+	sqlite? ( dev-db/sqlite:3 )
+	crypt? (
+		dev-libs/openssl:=
+	)
+	xml? ( dev-libs/expat )
+	zip? ( virtual/zlib:= )
+"
+DEPEND="${RDEPEND}"
+
+src_prepare() {
+	cmake_src_prepare
+
+	if [[ ${SLOT} != 0/$(< "${S}"/libversion) ]] ; then
+		die "Please update subslot in ebuild to the version in ${S}/libversion"
+	fi
+
+	if use test ; then
+		# ignore missing tests on experimental library
+		# and tests requiring running DB-servers, internet connections, etc.
+		sed -i -e '/testsuite/d' \
+			{Data/{,MySQL,ODBC},MongoDB,Net,NetSSL_OpenSSL,Redis}/CMakeLists.txt || die
+
+		# Poco expands ~ using passwd, which does not match $HOME in the build environment
+		sed -i -e '/CppUnit_addTest.*testExpand/d' \
+			Foundation/testsuite/src/PathTest.cpp || die
+	fi
+}
+
+src_configure() {
+	# apache support is dead and buggy, https://github.com/pocoproject/poco/issues/1764
+	local mycmakeargs=(
+		-DPOCO_UNBUNDLED=ON
+		-DENABLE_APACHECONNECTOR=OFF
+		-DENABLE_ACTIVERECORD="$(usex activerecord)"
+		-DENABLE_ACTIVERECORD_COMPILER="$(usex activerecord)"
+		-DENABLE_CPPPARSER="$(usex cppparser)"
+		-DENABLE_CRYPTO="$(usex crypt)"
+		-DENABLE_DATA="$(usex data)"
+		-DENABLE_DATA_MYSQL="$(usex mysql)"
+		-DENABLE_DATA_ODBC="$(usex odbc)"
+		-DENABLE_DATA_POSTGRESQL="$(usex postgres)"
+		-DENABLE_DATA_SQLITE="$(usex sqlite)"
+		-DENABLE_DNSSD="$(usex avahi)"
+		-DENABLE_DNSSD_AVAHI="$(usex avahi)"
+		-DENABLE_JSON="$(usex util)"
+		-DENABLE_JWT="$(usex crypt)"
+		-DENABLE_MONGODB="$(usex mongodb)"
+		-DENABLE_NET="$(usex net)"
+		-DENABLE_NETSSL="$(usex crypt)"
+		-DENABLE_NETSSL_WIN=OFF
+		-DENABLE_PAGECOMPILER="$(usex pagecompiler)"
+		-DENABLE_PAGECOMPILER_FILE2PAGE="$(usex pagecompiler)"
+		-DENABLE_PDF="$(usex pdf)"
+		-DENABLE_POCODOC="$(usex pocodoc)"
+		-DENABLE_PROMETHEUS="$(usex prometheus)"
+		-DENABLE_SEVENZIP="$(usex 7z)"
+		-DENABLE_TESTS="$(usex test)"
+		-DENABLE_UTIL="$(usex util)"
+		-DENABLE_XML="$(usex xml)"
+		-DENABLE_ZIP="$(usex zip)"
+	)
+
+	cmake_src_configure
+}
+
+src_test() {
+	POCO_BASE="${S}" cmake_src_test -E DataPostgreSQL
+}
+
+src_install() {
+	cmake_src_install
+
+	if use examples ; then
+		for sd in */samples ; do
+			docinto examples/${sd%/samples}
+			dodoc -r ${sd}
+		done
+
+		find "${D}/usr/share/doc/${PF}/examples" \
+			-iname "*.sln" -or -iname "*.vcproj" -or \
+			-iname "*.vmsbuild" -or -iname "*.properties" \
+			| xargs rm -v || die
+	fi
+}