diff --git a/meta/recipes-support/vim/files/CVE-2026-59856.patch b/meta/recipes-support/vim/files/CVE-2026-59856.patch
new file mode 100644
index 0000000000..42636161d0
--- /dev/null
+++ b/meta/recipes-support/vim/files/CVE-2026-59856.patch
@@ -0,0 +1,103 @@
+From 43afc581a37a35762dd0ef292f038b9dc5680a24 Mon Sep 17 00:00:00 2001
+From: Hirohito Higashi <h.east.727@gmail.com>
+Date: Fri, 26 Jun 2026 20:07:01 +0900
+Subject: [PATCH] patch 9.2.0736: potential command execution in PHP
+ omni-completion
+
+Problem:  With PHP omni-completion, a crafted file can potentially
+          execute arbitrary commands when completing a class member.
+Solution: Quote the class name before inserting it into the search()
+          pattern run via win_execute().
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
+Signed-off-by: Christian Brabandt <cb@256bit.org>
+
+Upstream-Status: Backport [https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24]
+CVE: CVE-2026-59856
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ runtime/autoload/phpcomplete.vim        |  3 ++-
+ src/testdir/Make_all.mak                |  2 ++
+ src/testdir/test_plugin_phpcomplete.vim | 35 +++++++++++++++++++++++++
+ 3 files changed, 39 insertions(+), 1 deletion(-)
+ create mode 100644 src/testdir/test_plugin_phpcomplete.vim
+
+diff --git a/runtime/autoload/phpcomplete.vim b/runtime/autoload/phpcomplete.vim
+index 5b4263ae45..ec54352586 100644
+--- a/runtime/autoload/phpcomplete.vim
++++ b/runtime/autoload/phpcomplete.vim
+@@ -2082,7 +2082,8 @@ function! phpcomplete#GetClassContentsStructure(file_path, file_lines, class_nam
+ 	let result = []
+ 	let popup_id = popup_create(a:file_lines, {'hidden': v:true})
+ 
+-	call win_execute(popup_id, 'call search(''\c\(class\|interface\|trait\)\_s\+'.a:class_name.'\(\>\|$\)'')')
++	call win_execute(popup_id, 'call search('
++	    \ . string('\c\(class\|interface\|trait\)\_s\+' . a:class_name . '\(\>\|$\)') . ')')
+ 	call win_execute(popup_id, "let cfline = line('.')")
+ 	call win_execute(popup_id, "call search('{')")
+ 	call win_execute(popup_id, "let endline = line('.')")
+diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
+index b06d1af431..b5735b6c3c 100644
+--- a/src/testdir/Make_all.mak
++++ b/src/testdir/Make_all.mak
+@@ -250,6 +250,7 @@ NEW_TESTS = \
+ 	test_plugin_man \
+ 	test_plugin_matchparen \
+ 	test_plugin_netrw \
++	test_plugin_phpcomplete \
+ 	test_plugin_python3complete \
+ 	test_plugin_osc52 \
+ 	test_plugin_tar \
+@@ -529,6 +530,7 @@ NEW_TESTS_RES = \
+ 	test_plugin_man.res \
+ 	test_plugin_matchparen.res \
+ 	test_plugin_netrw.res \
++	test_plugin_phpcomplete.res \
+ 	test_plugin_python3complete.res \
+ 	test_plugin_osc52.res \
+ 	test_plugin_tar.res \
+diff --git a/src/testdir/test_plugin_phpcomplete.vim b/src/testdir/test_plugin_phpcomplete.vim
+new file mode 100644
+index 0000000000..7f66be47b7
+--- /dev/null
++++ b/src/testdir/test_plugin_phpcomplete.vim
+@@ -0,0 +1,35 @@
++" Tests for the PHP omni-completion plugin (runtime/autoload/phpcomplete.vim).
++
++" A buffer class name is interpolated into a search() pattern run via
++" win_execute().  Without escaping, "'" closes the string and "|" starts a new
++" Ex command, so the name runs as an Ex command during completion.
++func Test_phpcomplete_no_exec_via_class_name()
++  unlet! g:phpcomplete_injected
++  let lines = ['<?php', 'class x {}', '']
++  let payload = "x')|let g:phpcomplete_injected = 1|call search('"
++
++  try
++    call phpcomplete#GetClassContentsStructure('x.php', lines, payload)
++  catch
++  endtry
++
++  call assert_false(exists('g:phpcomplete_injected'),
++        \ 'class name was executed as an Ex command during completion')
++
++  unlet! g:phpcomplete_injected
++endfunc
++
++func Test_phpcomplete_class_lookup_still_works()
++  let lines = ['<?php', 'class Foo {', '    public $bar;', '}', '']
++  let result = phpcomplete#GetClassContentsStructure('Foo.php', lines, 'Foo')
++
++  call assert_equal(type([]), type(result),
++        \ 'GetClassContentsStructure did not return a list')
++  call assert_true(len(result) > 0, 'no class structure returned')
++  call assert_match('class Foo', result[0].content,
++        \ 'class body missing from returned content')
++  call assert_match('bar', result[0].content,
++        \ 'class member missing from returned content')
++endfunc
++
++" vim: shiftwidth=2 sts=2 expandtab
+-- 
+2.43.0
+
diff --git a/meta/recipes-support/vim/vim.inc b/meta/recipes-support/vim/vim.inc
index 008dbdb8df..b9f8e40a28 100644
--- a/meta/recipes-support/vim/vim.inc
+++ b/meta/recipes-support/vim/vim.inc
@@ -30,6 +30,7 @@ SRC_URI = "git://github.com/vim/vim.git;branch=master;protocol=https;tag=v${PV}
            file://CVE-2026-57454.patch \
            file://CVE-2026-57455.patch \
            file://CVE-2026-57456.patch \
+           file://CVE-2026-59856.patch \
            "
 
 PV .= ".0340"