Program: 21000
Project: 21000
Buggy source:
public ArrayList<DownloadLink> decryptIt(CryptedLink param,ProgressController progress) throws Exception {
  ArrayList<DownloadLink> decryptedLinks=new ArrayList<DownloadLink>();
  String parameter=param.toString();
  String containerId=new Regex(parameter,"String_Node_Str").getMatch(0);
  br.getPage("String_Node_Str" + containerId);
  Form password=br.getForm(0);
  if (password != null && password.hasInputFieldByName("String_Node_Str")) {
    String latestPassword=this.getPluginConfig().getStringProperty("String_Node_Str");
    if (latestPassword != null) {
      password.put("String_Node_Str",latestPassword);
      br.submitForm(password);
    }
    password=br.getForm(0);
    if (password != null && password.hasInputFieldByName("String_Node_Str")) {
      latestPassword=PluginUtils.askPassword(this);
      password.put("String_Node_Str",latestPassword);
      br.setDebug(true);
      br.submitForm(password);
      password=br.getForm(0);
      if (password != null && password.hasInputFieldByName("String_Node_Str")) {
        PluginUtils.informPasswordWrong(this,latestPassword);
        return null;
      }
      getPluginConfig().setProperty("String_Node_Str",latestPassword);
      getPluginConfig().save();
    }
  }
  boolean valid=true;
  for (int i=0; i < 5; ++i) {
    Form captcha=br.getForm(0);
    if (br.containsHTML("String_Node_Str")) {
      valid=false;
      File file=this.getLocalCaptchaFile();
      String url=captcha.getRegex("String_Node_Str").getMatch(0);
      if (url == null)       url=captcha.getRegex("String_Node_Str").getMatch(0);
      Browser.download(file,br.cloneBrowser().openGetConnection(url));
      Point p;
      if (url.contains("String_Node_Str")) {
        String code=getCaptchaCode("String_Node_Str",file,param);
        if (code == null)         continue;
        String[] codep=code.split("String_Node_Str");
        p=new Point(Integer.parseInt(codep[0]),Integer.parseInt(codep[1]));
      }
 else       p=UserIO.getInstance().requestClickPositionDialog(file,JDL.L("String_Node_Str","String_Node_Str"),JDL.L("String_Node_Str","String_Node_Str"));
      if (p == null)       throw new DecrypterException(DecrypterException.CAPTCHA);
      captcha.put("String_Node_Str",p.x + "String_Node_Str");
      captcha.put("String_Node_Str",p.y + "String_Node_Str");
      br.submitForm(captcha);
    }
 else     if (captcha != null && !captcha.hasInputFieldByName("String_Node_Str")) {
      valid=false;
      File file=this.getLocalCaptchaFile();
      String url=captcha.getRegex("String_Node_Str").getMatch(0);
      Browser.download(file,br.cloneBrowser().openGetConnection(url));
      Point p=UserIO.getInstance().requestClickPositionDialog(file,JDL.L("String_Node_Str","String_Node_Str"),"String_Node_Str");
      if (p == null)       throw new DecrypterException(DecrypterException.CAPTCHA);
      captcha.put("String_Node_Str",p.x + "String_Node_Str");
      captcha.put("String_Node_Str",p.y + "String_Node_Str");
      br.submitForm(captcha);
    }
 else {
      valid=true;
      break;
    }
  }
  if (valid == false)   throw new DecrypterException(DecrypterException.CAPTCHA);
  String[] containers=br.getRegex("String_Node_Str").getColumn(0);
  HashMap<String,String> map=new HashMap<String,String>();
  for (  String c : containers) {
    Context cx=Context.enter();
    Scriptable scope=cx.initStandardObjects();
    c=c.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str");
    Object result=cx.evaluateString(scope,c,"String_Node_Str",1,null);
    String code=Context.toString(result);
    String[] row=new Regex(code,"String_Node_Str").getRow(0);
    if (row != null) {
      map.put(row[1],row[0]);
    }
 else {
    }
  }
  File container=null;
  if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str").replace("String_Node_Str","String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
  if (container != null) {
    decryptedLinks.addAll(JDUtilities.getController().getContainerLinks(container));
    container.delete();
    if (decryptedLinks.size() > 0)     return decryptedLinks;
  }
  Form[] forms=br.getForms();
  progress.setRange(forms.length / 2);
  for (  Form form : forms) {
    Browser clone;
    if (form.getInputField("String_Node_Str").getValue() != null && form.getInputField("String_Node_Str").getValue().length() > 0) {
      progress.increase(1);
      clone=br.cloneBrowser();
      clone.submitForm(form);
      clone.setDebug(true);
      String[] srcs=clone.getRegex("String_Node_Str").getColumn(0);
      for (      String col : srcs) {
        col=Encoding.htmlDecode(col);
        clone.getPage(col);
        if (clone.containsHTML("String_Node_Str")) {
          String[] evals=clone.getRegex("String_Node_Str").getColumn(0);
          for (          String c : evals) {
            Context cx=Context.enter();
            Scriptable scope=cx.initStandardObjects();
            c=c.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str");
            Object result=cx.evaluateString(scope,c,"String_Node_Str",1,null);
            String code=Context.toString(result);
            String versch;
            if (code.startsWith("String_Node_Str")) {
              versch=new Regex(code,"String_Node_Str").getMatch(0);
            }
 else {
              versch=new Regex(code,"String_Node_Str").getMatch(0);
            }
            versch=Encoding.Base64Decode(versch);
            versch=new Regex(versch,"String_Node_Str").getMatch(0);
            versch=Encoding.htmlDecode(versch);
            decryptedLinks.add(this.createDownloadlink(versch));
            String[] row=new Regex(code,"String_Node_Str").getRow(0);
            if (row != null) {
              map.put(row[1],row[0]);
            }
 else {
            }
          }
        }
      }
    }
  }
  return decryptedLinks;
}

Fixed version (ground truth):
public ArrayList<DownloadLink> decryptIt(CryptedLink param,ProgressController progress) throws Exception {
  ArrayList<DownloadLink> decryptedLinks=new ArrayList<DownloadLink>();
  String parameter=param.toString();
  String containerId=new Regex(parameter,"String_Node_Str").getMatch(0);
  br.getPage("String_Node_Str" + containerId);
  Form password=br.getForm(0);
  if (password != null && password.hasInputFieldByName("String_Node_Str")) {
    String latestPassword=this.getPluginConfig().getStringProperty("String_Node_Str");
    if (latestPassword != null) {
      password.put("String_Node_Str",latestPassword);
      br.submitForm(password);
    }
    password=br.getForm(0);
    if (password != null && password.hasInputFieldByName("String_Node_Str")) {
      latestPassword=PluginUtils.askPassword(this);
      password.put("String_Node_Str",latestPassword);
      br.setDebug(true);
      br.submitForm(password);
      password=br.getForm(0);
      if (password != null && password.hasInputFieldByName("String_Node_Str")) {
        PluginUtils.informPasswordWrong(this,latestPassword);
        return null;
      }
      getPluginConfig().setProperty("String_Node_Str",latestPassword);
      getPluginConfig().save();
    }
  }
  boolean valid=true;
  for (int i=0; i < 5; ++i) {
    Form captcha=br.getForm(0);
    if (br.containsHTML("String_Node_Str")) {
      valid=false;
      File file=this.getLocalCaptchaFile();
      String url=captcha.getRegex("String_Node_Str").getMatch(0);
      if (url == null)       url=captcha.getRegex("String_Node_Str").getMatch(1);
      Browser.download(file,br.cloneBrowser().openGetConnection(url));
      Point p;
      if (url.contains("String_Node_Str")) {
        String code=getCaptchaCode("String_Node_Str",file,param);
        if (code == null)         continue;
        String[] codep=code.split("String_Node_Str");
        p=new Point(Integer.parseInt(codep[0]),Integer.parseInt(codep[1]));
      }
 else       p=UserIO.getInstance().requestClickPositionDialog(file,JDL.L("String_Node_Str","String_Node_Str"),JDL.L("String_Node_Str","String_Node_Str"));
      if (p == null)       throw new DecrypterException(DecrypterException.CAPTCHA);
      captcha.put("String_Node_Str",p.x + "String_Node_Str");
      captcha.put("String_Node_Str",p.y + "String_Node_Str");
      br.submitForm(captcha);
    }
 else     if (captcha != null && !captcha.hasInputFieldByName("String_Node_Str")) {
      valid=false;
      File file=this.getLocalCaptchaFile();
      String url=captcha.getRegex("String_Node_Str").getMatch(0);
      Browser.download(file,br.cloneBrowser().openGetConnection(url));
      Point p=UserIO.getInstance().requestClickPositionDialog(file,JDL.L("String_Node_Str","String_Node_Str"),"String_Node_Str");
      if (p == null)       throw new DecrypterException(DecrypterException.CAPTCHA);
      captcha.put("String_Node_Str",p.x + "String_Node_Str");
      captcha.put("String_Node_Str",p.y + "String_Node_Str");
      br.submitForm(captcha);
    }
 else {
      valid=true;
      break;
    }
  }
  if (valid == false)   throw new DecrypterException(DecrypterException.CAPTCHA);
  String[] containers=br.getRegex("String_Node_Str").getColumn(0);
  HashMap<String,String> map=new HashMap<String,String>();
  for (  String c : containers) {
    @SuppressWarnings("String_Node_Str") Context cx=Context.enter();
    Scriptable scope=cx.initStandardObjects();
    c=c.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str");
    Object result=cx.evaluateString(scope,c,"String_Node_Str",1,null);
    String code=Context.toString(result);
    String[] row=new Regex(code,"String_Node_Str").getRow(0);
    if (row != null) {
      map.put(row[1],row[0]);
    }
 else {
    }
  }
  File container=null;
  if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str").replace("String_Node_Str","String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
 else   if (map.containsKey("String_Node_Str")) {
    container=JDUtilities.getResourceFile("String_Node_Str" + System.currentTimeMillis() + "String_Node_Str");
    if (!container.exists())     container.createNewFile();
    br.cloneBrowser().getDownload(container,map.get("String_Node_Str"));
  }
  if (container != null) {
    decryptedLinks.addAll(JDUtilities.getController().getContainerLinks(container));
    container.delete();
    if (decryptedLinks.size() > 0)     return decryptedLinks;
  }
  Form[] forms=br.getForms();
  progress.setRange(forms.length / 2);
  for (  Form form : forms) {
    Browser clone;
    if (form.getInputField("String_Node_Str").getValue() != null && form.getInputField("String_Node_Str").getValue().length() > 0) {
      progress.increase(1);
      clone=br.cloneBrowser();
      clone.submitForm(form);
      clone.setDebug(true);
      String[] srcs=clone.getRegex("String_Node_Str").getColumn(0);
      for (      String col : srcs) {
        col=Encoding.htmlDecode(col);
        clone.getPage(col);
        if (clone.containsHTML("String_Node_Str")) {
          String[] evals=clone.getRegex("String_Node_Str").getColumn(0);
          for (          String c : evals) {
            @SuppressWarnings("String_Node_Str") Context cx=Context.enter();
            Scriptable scope=cx.initStandardObjects();
            c=c.replace("String_Node_Str","String_Node_Str").replace("String_Node_Str","String_Node_Str");
            Object result=cx.evaluateString(scope,c,"String_Node_Str",1,null);
            String code=Context.toString(result);
            String versch;
            versch=new Regex(code,"String_Node_Str").getMatch(0);
            versch=Encoding.Base64Decode(versch);
            versch=new Regex(versch,"String_Node_Str").getMatch(0);
            versch=Encoding.htmlDecode(versch);
            decryptedLinks.add(this.createDownloadlink(versch));
            String[] row=new Regex(code,"String_Node_Str").getRow(0);
            if (row != null) {
              map.put(row[1],row[0]);
            }
 else {
            }
          }
        }
      }
    }
  }
  return decryptedLinks;
}