diff --git a/src/libgit2/repository.c b/src/libgit2/repository.c
index c08801e11..e45809263 100644
--- a/src/libgit2/repository.c
+++ b/src/libgit2/repository.c
@@ -582,16 +582,27 @@ static int validate_ownership_cb(const git_config_entry *entry, void *payload)
 	} else if (strcmp(entry->value, "*") == 0) {
 		*data->is_safe = true;
 	} else {
+		bool is_prefix = false, match;
+
 		if (git_str_sets(&data->tmp, entry->value) < 0)
 			return -1;
 
+		/*
+		 * A value ending with slash* is treated as a prefix match.
+		 * Strip only the '*', leaving the trailing slash in place.
+		 */
+		if (git__suffixcmp(data->tmp.ptr, "/*") == 0) {
+			is_prefix = true;
+			git_str_shorten(&data->tmp, 1);
+		}
+
 		if (!git_fs_path_is_root(data->tmp.ptr)) {
 			/* Input must not have trailing backslash. */
 			if (!data->tmp.size ||
-			    data->tmp.ptr[data->tmp.size - 1] == '/')
+			    (!is_prefix && data->tmp.ptr[data->tmp.size - 1] == '/'))
 				return 0;
 
-			if (git_fs_path_to_dir(&data->tmp) < 0)
+			if (!is_prefix && git_fs_path_to_dir(&data->tmp) < 0)
 				return -1;
 		}
 
@@ -623,7 +634,11 @@ static int validate_ownership_cb(const git_config_entry *entry, void *payload)
 		if (strncmp(test_path, "%(prefix)//", strlen("%(prefix)//")) == 0)
 			test_path += strlen("%(prefix)/");
 
-		if (strcmp(test_path, data->repo_path) == 0)
+		match = is_prefix ?
+			(git__prefixcmp(data->repo_path, test_path) == 0) :
+			(strcmp(test_path, data->repo_path) == 0);
+
+		if (match)
 			*data->is_safe = true;
 	}
 
diff --git a/tests/libgit2/repo/open.c b/tests/libgit2/repo/open.c
index 52b14ed5f..c2edb3bc0 100644
--- a/tests/libgit2/repo/open.c
+++ b/tests/libgit2/repo/open.c
@@ -659,6 +659,26 @@ void test_repo_open__can_wildcard_allowlist_with_problematic_ownership(void)
 	cl_git_pass(test_safe_path("*"));
 }
 
+void test_repo_open__can_allowlist_dirs_wildcard(void)
+{
+	git_str path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_printf(
+	        &path, "%s/*", clar_sandbox_path()));
+	cl_git_pass(test_safe_path(path.ptr));
+	git_str_dispose(&path);
+}
+
+void test_repo_open__allowlist_dirs_cannot_have_wildcard_suffix(void)
+{
+	git_str path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_printf(
+	        &path, "%s/%s*", clar_sandbox_path(), "empty_standard_repo"));
+	cl_git_fail_with(GIT_EOWNER, test_safe_path(path.ptr));
+	git_str_dispose(&path);
+}
+
 void test_repo_open__can_allowlist_bare_gitdir(void)
 {
 	git_str path = GIT_STR_INIT;
@@ -669,6 +689,38 @@ void test_repo_open__can_allowlist_bare_gitdir(void)
 	git_str_dispose(&path);
 }
 
+void test_repo_open__can_allowlist_bare_wildcard_gitdir(void)
+{
+	git_str path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_printf(
+	        &path, "%s/*", clar_sandbox_path()));
+	cl_git_pass(test_bare_safe_path(path.ptr));
+
+	git_str_dispose(&path);
+}
+
+void test_repo_open__allowlist_bare_dirs_cannot_have_wildcard_suffix(void)
+{
+	git_str path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_printf(
+	        &path, "%s/%s*", clar_sandbox_path(), "testrepo.git"));
+	cl_git_fail_with(GIT_EOWNER, test_bare_safe_path(path.ptr));
+
+	git_str_dispose(&path);
+}
+
+void test_repo_open__allowlist_relative_bare_dirs_cannot_have_wildcard_suffix(void)
+{
+	git_str path = GIT_STR_INIT;
+
+	cl_git_pass(git_str_printf(&path, "%s*", clar_sandbox_path()));
+	cl_git_fail_with(GIT_EOWNER, test_bare_safe_path(path.ptr));
+
+	git_str_dispose(&path);
+}
+
 void test_repo_open__can_wildcard_allowlist_bare_gitdir(void)
 {
 	cl_git_pass(test_bare_safe_path("*"));
@@ -691,6 +743,23 @@ void test_repo_open__can_handle_prefixed_safe_paths(void)
 #endif
 }
 
+void test_repo_open__can_handle_prefixed_wildcard_safe_paths(void)
+{
+#ifndef GIT_WIN32
+	git_str path = GIT_STR_INIT;
+
+	/*
+	 * Using "%(prefix)/" becomes "%(prefix)//tmp/foo" - so
+	 * "%(prefix)/" is stripped and means the literal path
+	 * follows.
+	 */
+	cl_git_pass(git_str_printf(&path, "%%(prefix)/%s/*",
+		clar_sandbox_path()));
+	cl_git_pass(test_safe_path(path.ptr));
+	git_str_dispose(&path);
+#endif
+}
+
 void test_repo_open__prefixed_safe_paths_must_have_two_slashes(void)
 {
 	git_str path = GIT_STR_INIT;