feat(Security): fixes

package-lock.json

@@ -33,6 +33,7 @@
         "diff": "^8.0.3",
         "dompurify": "^3.4.0",
         "embedpdf-snippet": "file:vendor/embedpdf/embedpdf-snippet-2.9.1.tgz",
+        "fast-xml-parser": "^5.7.1",
         "heic2any": "^0.0.4",
         "highlight.js": "^11.11.1",
         "html2canvas": "^1.4.1",
@@ -2074,6 +2075,18 @@
       "integrity": "sha512-ObyTmabopTMwN6AGwrEkmDbdmM5wnwlRdn9jnJYQ2KbBUPdPDcfNf1QkcWFOVD+qIgSqILz9nK51e22T+x+gkQ==",
       "license": "ISC"
     },
+    "node_modules/@nodable/entities": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@nodable/entities/-/entities-2.1.0.tgz",
+      "integrity": "sha512-nyT7T3nbMyBI/lvr6L5TyWbFJAI9FTgVRakNoBqCD+PmID8DzFrrNdLLtHMwMszOtqZa8PAOV24ZqDnQrhQINA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodable"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/@oxc-project/types": {
       "version": "0.122.0",
       "resolved": "https://registry.npmjs.org/@oxc-project/types/-/types-0.122.0.tgz",
@@ -6993,6 +7006,42 @@
       "integrity": "sha512-w+eufiZ1WuJYgPXbV/PO3NCMEc3xqylkKHzp8bxp1uW4qaSNQUkwmLLEc3kKsfz8lpV1F8Ht3U1Cm+9Srog2ug==",
       "license": "(MIT AND Zlib)"
     },
+    "node_modules/fast-xml-builder": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/fast-xml-builder/-/fast-xml-builder-1.1.5.tgz",
+      "integrity": "sha512-4TJn/8FKLeslLAH3dnohXqE3QSoxkhvaMzepOIZytwJXZO69Bfz0HBdDHzOTOon6G59Zrk6VQ2bEiv1t61rfkA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "path-expression-matcher": "^1.1.3"
+      }
+    },
+    "node_modules/fast-xml-parser": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-5.7.1.tgz",
+      "integrity": "sha512-8Cc3f8GUGUULg34pBch/KGyPLglS+OFs05deyOlY7fL2MTagYPKrVQNmR1fLF/yJ9PH5ZSTd3YDF6pnmeZU+zA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "@nodable/entities": "^2.1.0",
+        "fast-xml-builder": "^1.1.5",
+        "path-expression-matcher": "^1.5.0",
+        "strnum": "^2.2.3"
+      },
+      "bin": {
+        "fxparser": "src/cli/cli.js"
+      }
+    },
     "node_modules/fdir": {
       "version": "6.5.0",
       "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
@@ -9861,6 +9910,21 @@
         "node": ">=8"
       }
     },
+    "node_modules/path-expression-matcher": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/path-expression-matcher/-/path-expression-matcher-1.5.0.tgz",
+      "integrity": "sha512-cbrerZV+6rvdQrrD+iGMcZFEiiSrbv9Tfdkvnusy6y0x0GKBXREFg/Y65GhIfm0tnLntThhzCnfKwp1WRjeCyQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/path-key": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/path-key/-/path-key-3.1.1.tgz",
@@ -11347,6 +11411,18 @@
         "url": "https://github.com/chalk/ansi-regex?sponsor=1"
       }
     },
+    "node_modules/strnum": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/strnum/-/strnum-2.2.3.tgz",
+      "integrity": "sha512-oKx6RUCuHfT3oyVjtnrmn19H1SiCqgJSg+54XqURKp5aCMbrXrhLjRN9TjuwMjiYstZ0MzDrHqkGZ5dFTKd+zg==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/stylis": {
       "version": "4.3.6",
       "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.3.6.tgz",

package.json

@@ -94,6 +94,7 @@
     "diff": "^8.0.3",
     "dompurify": "^3.4.0",
     "embedpdf-snippet": "file:vendor/embedpdf/embedpdf-snippet-2.9.1.tgz",
+    "fast-xml-parser": "^5.7.1",
     "heic2any": "^0.0.4",
     "highlight.js": "^11.11.1",
     "html2canvas": "^1.4.1",

public/sw.js

@@ -330,6 +330,22 @@ async function cacheInBatches(cache, urls, batchSize = 5) {
 self.addEventListener('message', (event) => {
   if (!event.data) return;
 
+  if (event.origin && event.origin !== self.location.origin) {
+    return;
+  }
+
+  const source = event.source;
+  if (source && typeof source === 'object' && 'url' in source) {
+    try {
+      const sourceOrigin = new URL(source.url).origin;
+      if (sourceOrigin !== self.location.origin) {
+        return;
+      }
+    } catch (e) {
+      return;
+    }
+  }
+
   if (event.data.type === 'SKIP_WAITING') {
     self.skipWaiting();
     return;

src/js/compare/engine/compare.worker.ts

@@ -43,7 +43,26 @@ interface ErrorResult {
   message: string;
 }
 
-self.onmessage = function (e: MessageEvent<WorkerMessage>) {
+function isValidMessage(data: unknown): data is WorkerMessage {
+  if (!data || typeof data !== 'object') return false;
+  const m = data as Record<string, unknown>;
+  if (typeof m.id !== 'number') return false;
+  if (m.type === 'diff') {
+    return Array.isArray(m.beforeItems) && Array.isArray(m.afterItems);
+  }
+  if (m.type === 'pair') {
+    return Array.isArray(m.leftPages) && Array.isArray(m.rightPages);
+  }
+  return false;
+}
+
+self.onmessage = function (e: MessageEvent<unknown>) {
+  if (e.origin && e.origin !== '' && e.origin !== self.location.origin) {
+    return;
+  }
+  if (!isValidMessage(e.data)) {
+    return;
+  }
   const msg = e.data;
   try {
     if (msg.type === 'diff') {

src/js/handlers/fileHandler.ts

@@ -720,7 +720,14 @@ async function handleMultiFileUpload(toolId: string) {
         'w-full h-36 sm:h-40 md:h-44 bg-gray-900 rounded-md border-2 border-gray-600 flex items-center justify-center overflow-hidden';
 
       const img = document.createElement('img');
-      img.src = url;
+      try {
+        const parsed = new URL(url);
+        if (parsed.protocol === 'blob:') {
+          img.src = parsed.href;
+        }
+      } catch {
+        console.warn('Invalid blob URL for preview');
+      }
       img.className = 'max-w-full max-h-full object-contain';
 
       const p = document.createElement('p');

src/js/logic/digital-sign-pdf-page.ts

@@ -203,9 +203,16 @@ function initializePage(): void {
 
         if (sigImageThumb && sigImagePreview) {
           const url = URL.createObjectURL(file);
-          sigImageThumb.src = url;
+          try {
+            const parsed = new URL(url);
+            if (parsed.protocol === 'blob:') {
+              sigImageThumb.src = parsed.href;
               sigImagePreview.classList.remove('hidden');
             }
+          } catch {
+            console.warn('Invalid blob URL for signature preview');
+          }
+        }
       }
     });
   }

src/js/logic/form-creator.ts

@@ -19,6 +19,7 @@ type LucideWindow = Window & {
   };
 };
 
+import DOMPurify from 'dompurify';
 import { initializeGlobalShortcuts } from '../utils/shortcuts-init.js';
 import { downloadFile, escapeHtml, hexToRgb } from '../utils/helpers.js';
 import { loadPdfWithPasswordPrompt } from '../utils/password-prompt.js';
@@ -1327,7 +1328,7 @@ function showProperties(field: FormField): void {
         `;
   }
 
-  propertiesPanel.innerHTML = `
+  const propertiesHtml = `
     <div class="space-y-3">
       <div>
         <label class="block text-xs font-semibold text-gray-300 mb-1">Field Name ${field.type === 'radio' ? '(Group Name)' : ''}</label>
@@ -1399,6 +1400,10 @@ function showProperties(field: FormField): void {
     </div>
   `;
 
+  propertiesPanel.innerHTML = DOMPurify.sanitize(propertiesHtml, {
+    ADD_ATTR: ['target'],
+  });
+
   // Common listeners
   const propName = document.getElementById('propName') as HTMLInputElement;
   const nameError = document.getElementById('nameError') as HTMLDivElement;

src/js/utils/xml-to-pdf.ts

@@ -1,5 +1,6 @@
 import { jsPDF } from 'jspdf';
 import autoTable from 'jspdf-autotable';
+import { XMLParser } from 'fast-xml-parser';
 
 export interface XmlToPdfOptions {
   onProgress?: (percent: number, message: string) => void;
@@ -9,6 +10,9 @@ interface jsPDFWithAutoTable extends jsPDF {
   lastAutoTable?: { finalY: number };
 }
 
+const ATTR_PREFIX = '@_';
+const TEXT_KEY = '#text';
+
 export async function convertXmlToPdf(
   file: File,
   options?: XmlToPdfOptions
@@ -16,48 +20,82 @@ export async function convertXmlToPdf(
   const { onProgress } = options || {};
 
   onProgress?.(10, 'Reading XML file...');
-    const xmlText = await file.text();
+  const rawXmlText = await file.text();
+  const xmlText = String(rawXmlText)
+    .replace(/<!DOCTYPE[\s\S]*?>/gi, '')
+    .replace(/<!ENTITY[\s\S]*?>/gi, '')
+    .replace(/<\?xml-stylesheet[\s\S]*?\?>/gi, '');
 
   onProgress?.(30, 'Parsing XML structure...');
-    const parser = new DOMParser();
-    const xmlDoc = parser.parseFromString(xmlText, 'text/xml');
+  const parser = new XMLParser({
+    ignoreAttributes: false,
+    attributeNamePrefix: ATTR_PREFIX,
+    textNodeName: TEXT_KEY,
+    allowBooleanAttributes: true,
+    parseTagValue: false,
+    parseAttributeValue: false,
+    trimValues: true,
+    processEntities: true,
+    ignoreDeclaration: true,
+    ignorePiTags: true,
+  });
 
-    const parseError = xmlDoc.querySelector('parsererror');
-    if (parseError) {
-        throw new Error('Invalid XML: ' + parseError.textContent);
+  let parsed: Record<string, unknown>;
+  try {
+    parsed = parser.parse(xmlText) as Record<string, unknown>;
+  } catch (err) {
+    const msg = err instanceof Error ? err.message : String(err);
+    throw new Error('Invalid XML: ' + toSafeText(msg), { cause: err });
   }
 
+  const rootKeys = Object.keys(parsed);
+  if (rootKeys.length === 0) {
+    throw new Error('Invalid XML: no root element');
+  }
+  const rootName = rootKeys[0];
+  const rootValue = parsed[rootName];
+
   onProgress?.(50, 'Analyzing data structure...');
 
   const doc: jsPDFWithAutoTable = new jsPDF({
     orientation: 'landscape',
     unit: 'mm',
-        format: 'a4'
+    format: 'a4',
   });
 
   const pageWidth = doc.internal.pageSize.getWidth();
   let yPosition = 20;
 
-    const root = xmlDoc.documentElement;
-    const rootName = formatTitle(root.tagName);
-
   doc.setFontSize(18);
   doc.setFont('helvetica', 'bold');
-    doc.text(rootName, pageWidth / 2, yPosition, { align: 'center' });
+  doc.text(formatTitle(rootName), pageWidth / 2, yPosition, {
+    align: 'center',
+  });
   yPosition += 15;
 
   onProgress?.(60, 'Generating formatted content...');
 
-    const children = Array.from(root.children);
+  if (isPlainObject(rootValue)) {
+    const rootObj = rootValue;
+    const childEntries = Object.entries(rootObj).filter(
+      ([k]) => !k.startsWith(ATTR_PREFIX) && k !== TEXT_KEY
+    );
 
-    if (children.length > 0) {
-        const groups = groupByTagName(children);
+    if (childEntries.length > 0) {
+      const groups = groupChildrenByTagName(childEntries);
 
+      const renderableGroups: Array<[string, Record<string, unknown>[]]> = [];
       for (const [groupName, elements] of Object.entries(groups)) {
         const { headers, rows } = extractTableData(elements);
-
         if (headers.length > 0 && rows.length > 0) {
-                if (Object.keys(groups).length > 1) {
+          renderableGroups.push([groupName, elements]);
+        }
+      }
+
+      for (const [groupName, elements] of renderableGroups) {
+        const { headers, rows } = extractTableData(elements);
+
+        if (renderableGroups.length > 1) {
           doc.setFontSize(14);
           doc.setFont('helvetica', 'bold');
           doc.text(formatTitle(groupName), 14, yPosition);
@@ -65,7 +103,7 @@ export async function convertXmlToPdf(
         }
 
         autoTable(doc, {
-                    head: [headers.map(h => formatTitle(h))],
+          head: [headers.map((h) => formatTitle(h))],
           body: rows,
           startY: yPosition,
           styles: {
@@ -85,14 +123,13 @@ export async function convertXmlToPdf(
           theme: 'striped',
           didDrawPage: (data) => {
             yPosition = (data.cursor?.y || yPosition) + 10;
-                    }
+          },
         });
 
         yPosition = (doc.lastAutoTable?.finalY || yPosition) + 15;
       }
-        }
     } else {
-        const kvPairs = extractKeyValuePairs(root);
+      const kvPairs = extractKeyValuePairs(rootObj);
       if (kvPairs.length > 0) {
         autoTable(doc, {
           head: [['Property', 'Value']],
@@ -116,6 +153,7 @@ export async function convertXmlToPdf(
         });
       }
     }
+  }
 
   onProgress?.(90, 'Finalizing PDF...');
 
@@ -125,40 +163,48 @@ export async function convertXmlToPdf(
   return pdfBlob;
 }
 
+function isPlainObject(val: unknown): val is Record<string, unknown> {
+  return val !== null && typeof val === 'object' && !Array.isArray(val);
+}
 
-function groupByTagName(elements: Element[]): Record<string, Element[]> {
-    const groups: Record<string, Element[]> = {};
-
-    for (const element of elements) {
-        const tagName = element.tagName;
-        if (!groups[tagName]) {
-            groups[tagName] = [];
+function groupChildrenByTagName(
+  entries: [string, unknown][]
+): Record<string, Record<string, unknown>[]> {
+  const groups: Record<string, Record<string, unknown>[]> = {};
+  for (const [tagName, value] of entries) {
+    const items = Array.isArray(value) ? value : [value];
+    const normalized: Record<string, unknown>[] = items.map((v) => {
+      if (isPlainObject(v)) return v;
+      if (v == null) return {};
+      return { [TEXT_KEY]: String(v) };
+    });
+    groups[tagName] = normalized;
   }
-        groups[tagName].push(element);
-    }
-
   return groups;
 }
 
-function extractTableData(elements: Element[]): { headers: string[], rows: string[][] } {
-    if (elements.length === 0) {
-        return { headers: [], rows: [] };
-    }
+function extractTableData(elements: Record<string, unknown>[]): {
+  headers: string[];
+  rows: string[][];
+} {
+  if (elements.length === 0) return { headers: [], rows: [] };
 
   const headerSet = new Set<string>();
   for (const element of elements) {
-        for (const child of Array.from(element.children)) {
-            headerSet.add(child.tagName);
+    for (const key of Object.keys(element)) {
+      if (key.startsWith(ATTR_PREFIX)) continue;
+      if (key === TEXT_KEY) continue;
+      headerSet.add(key);
     }
   }
   const headers = Array.from(headerSet);
+  if (headers.length === 0) return { headers: [], rows: [] };
 
   const rows: string[][] = [];
   for (const element of elements) {
     const row: string[] = [];
     for (const header of headers) {
-            const child = element.querySelector(header);
-            row.push(child?.textContent?.trim() || '');
+      row.push(toSafeText(stringifyValue(element[header])));
     }
     rows.push(row);
   }
@@ -166,31 +212,69 @@ function extractTableData(elements: Element[]): { headers: string[], rows: strin
   return { headers, rows };
 }
 
-
-function extractKeyValuePairs(element: Element): string[][] {
+function extractKeyValuePairs(obj: Record<string, unknown>): string[][] {
   const pairs: string[][] = [];
 
-    for (const child of Array.from(element.children)) {
-        const key = child.tagName;
-        const value = child.textContent?.trim() || '';
-        if (value) {
-            pairs.push([formatTitle(key), value]);
+  for (const [key, val] of Object.entries(obj)) {
+    if (key.startsWith(ATTR_PREFIX)) continue;
+    if (key === TEXT_KEY) continue;
+    const strVal = toSafeText(stringifyValue(val));
+    if (strVal) {
+      pairs.push([formatTitle(key), strVal]);
     }
   }
 
-    for (const attr of Array.from(element.attributes)) {
-        pairs.push([formatTitle(attr.name), attr.value]);
+  for (const [key, val] of Object.entries(obj)) {
+    if (!key.startsWith(ATTR_PREFIX)) continue;
+    const attrName = key.slice(ATTR_PREFIX.length);
+    pairs.push([formatTitle(attrName), toSafeText(stringifyValue(val))]);
   }
 
   return pairs;
 }
 
+function stringifyValue(val: unknown): string {
+  if (val == null) return '';
+  if (typeof val === 'string') return val;
+  if (typeof val === 'number' || typeof val === 'boolean') return String(val);
+  if (Array.isArray(val)) {
+    return val
+      .map((v) => stringifyValue(v))
+      .filter((s) => s.length > 0)
+      .join(', ');
+  }
+  if (isPlainObject(val)) {
+    const parts: string[] = [];
+    if (TEXT_KEY in val) {
+      const t = stringifyValue(val[TEXT_KEY]);
+      if (t) parts.push(t);
+    }
+    for (const [k, v] of Object.entries(val)) {
+      if (k.startsWith(ATTR_PREFIX)) continue;
+      if (k === TEXT_KEY) continue;
+      const inner = stringifyValue(v);
+      if (inner) parts.push(inner);
+    }
+    return parts.join(' ');
+  }
+  return String(val);
+}
+
+function toSafeText(raw: string | null | undefined): string {
+  if (raw == null) return '';
+  return (
+    String(raw)
+      // eslint-disable-next-line no-control-regex
+      .replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/g, '')
+      .trim()
+  );
+}
 
 function formatTitle(tagName: string): string {
   return tagName
     .replace(/[_-]/g, ' ')
     .replace(/([a-z])([A-Z])/g, '$1 $2')
     .split(' ')
-        .map(word => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
+    .map((word) => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
     .join(' ');
 }