Check userID for nil to prevent panic

matrix-org · Dec 14, 2023 · 436aee5 · 436aee5
1 parent e97395e
commit 436aee5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/eventauth.go b/eventauth.go
@@ -526,7 +526,7 @@ func (a *allowerContext) powerLevelsEventAllowed(event PDU) error {
 		if err != nil {
 			return err
 		}
-		if !isValidUserID(sender.String()) {
+		if sender == nil || !isValidUserID(sender.String()) {
 			return errorf("Not a valid user ID: %q", senderID)
 		}
 	}