diff options
Diffstat (limited to 'lib/UserBackend.php')
| -rw-r--r-- | lib/UserBackend.php | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/UserBackend.php b/lib/UserBackend.php index b65bccf9..dcec830a 100644 --- a/lib/UserBackend.php +++ b/lib/UserBackend.php @@ -702,6 +702,11 @@ class UserBackend implements IApacheBackend, UserInterface, IUserBackend { * */ public function testEncodedObjectGUID(string $uid): string { + if (preg_match('/[^a-zA-Z0-9=+\/]/', $uid) !== 0) { + // certainly not encoded + return $uid; + } + $candidate = base64_decode($uid, false); if($candidate === false) { return $uid; |