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-rw-r--r--plugins/managesieve/managesieve.php7
1 files changed, 5 insertions, 2 deletions
diff --git a/plugins/managesieve/managesieve.php b/plugins/managesieve/managesieve.php
index c58dc8cab..7c10053a3 100644
--- a/plugins/managesieve/managesieve.php
+++ b/plugins/managesieve/managesieve.php
@@ -709,9 +709,12 @@ class managesieve extends rcube_plugin
if (!count($headers))
$this->errors['tests'][$i]['header'] = $this->gettext('cannotbeempty');
else {
- foreach ($headers as $hr)
- if (!preg_match('/^[a-z0-9-]+$/i', $hr))
+ foreach ($headers as $hr) {
+ // RFC2822: printable ASCII except colon
+ if (!preg_match('/^[\x21-\x39\x41-\x7E]+$/i', $hr)) {
$this->errors['tests'][$i]['header'] = $this->gettext('forbiddenchars');
+ }
+ }
}
if (empty($this->errors['tests'][$i]['header']))