Commit: patch 9.2.0381: Vim9: Missing check_secure() in exec_instructions()

[Christian Brabandt]

patch 9.2.0381: Vim9: Missing check_secure() in exec_instructions()

Commit: https://github.com/vim/vim/commit/ec3f79e037349735466135cded2b7362521370cf
Author: Christian Brabandt <c...@256bit.org>
Date: Mon Apr 20 17:44:45 2026 +0000

patch 9.2.0381: Vim9: Missing check_secure() in exec_instructions()

Problem: Vim9: Missing check_secure() when executing ISN_STOREENV
instruction (Andrej Tomči)
Solution: Add check_secure(), add test.

closes: #19992

Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/testdir/test_restricted.vim b/src/testdir/test_restricted.vim
index 2d8c8ce5f..d9810826a 100644
--- a/src/testdir/test_restricted.vim
+++ b/src/testdir/test_restricted.vim
@@ -220,4 +220,49 @@ func Test_restricted_cscope()
call delete('XResult_cscope')
endfunc

+func Test_vim9_storeenv_sandbox()
+ let lines =<< trim END
+ vim9script
+
+ function g:LegacySetEnv()
+ let $VIM_SANDBOX_TEST = 'legacy'
+ endfunc
+
+ def Vim9SetEnv()
+ $VIM_SANDBOX_TEST = 'vim9_bypass'
+ enddef
+
+ # Legacy path should be blocked by check_secure()
+ var legacy_blocked = false
+ try
+ legacy sandbox call LegacySetEnv()
+ catch /E48/
+ legacy_blocked = true
+ endtry
+ assert_true(legacy_blocked, 'legacy $ENV assignment should be blocked in sandbox')
+ assert_false(exists('$VIM_SANDBOX_TEST'))
+
+ # Vim9 path should also be blocked by check_secure()
+ var vim9_blocked = false
+ try
+ sandbox Vim9SetEnv()
+ catch /E48/
+ vim9_blocked = true
+ endtry
+ assert_true(vim9_blocked, 'Vim9 ISN_STOREENV should be blocked in sandbox')
+ assert_false(exists('$VIM_SANDBOX_TEST'))
+ writefile([
+ legacy_blocked,
+ vim9_blocked,
+ string(v:errors)], 'XResult_storeenv')
+ qa
+ END
+ call writefile(lines, 'Xtest_storeenv_sandbox.vim', 'D')
+ let expected = ['true', 'true', '[]']
+ if RunVim([], [], '-u NONE -N -i NONE --not-a-term -S Xtest_storeenv_sandbox.vim')
+ call assert_equal(expected, readfile('XResult_storeenv'))
+ endif
+ call delete('XResult_storeenv')
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index ddac9aa6d..eaaa793d8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 381,
/**/
380,
/**/
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 1bc25ed98..d83b7968b 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -4472,7 +4472,7 @@ exec_instructions(ectx_T *ectx)

// store $ENV
case ISN_STOREENV:
- if (check_restricted())
+ if (check_secure() || check_restricted())
goto theend;
--ectx->ec_stack.ga_len;
tv = STACK_TV_BOT(0);