diff --git a/apps/desktop/src-tauri/tauri.conf.json b/apps/desktop/src-tauri/tauri.conf.json
index b42fe49..9612f6a 100644
--- a/apps/desktop/src-tauri/tauri.conf.json
+++ b/apps/desktop/src-tauri/tauri.conf.json
@@ -13,7 +13,7 @@
     "withGlobalTauri": true,
     "windows": [{ "label": "main", "title": "Pipu Music", "width": 1200, "height": 800, "minWidth": 720, "minHeight": 540 }],
     "security": {
-      "csp": "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: http://127.0.0.1:*; font-src 'self' data:; media-src 'self' blob: http://127.0.0.1:*; connect-src 'self' ipc: http://ipc.localhost http://127.0.0.1:*; object-src 'none'; base-uri 'self'; frame-src 'none'"
+      "csp": "default-src 'self'; script-src 'self' 'wasm-unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: http://127.0.0.1:*; font-src 'self' data:; media-src 'self' blob: http://127.0.0.1:*; connect-src 'self' ipc: http://ipc.localhost http://127.0.0.1:*; object-src 'none'; base-uri 'self'; frame-src 'none'"
     }
   },
   "bundle": {
diff --git a/apps/web/e2e/uploads-csp.spec.ts b/apps/web/e2e/uploads-csp.spec.ts
new file mode 100644
index 0000000..7a434e3
--- /dev/null
+++ b/apps/web/e2e/uploads-csp.spec.ts
@@ -0,0 +1,48 @@
+import { readFileSync } from 'node:fs';
+import { expect, test } from '@playwright/test';
+
+const nginxHeaders = readFileSync(new URL('../../../deploy/nginx/security-headers.conf', import.meta.url), 'utf8');
+const desktopConfig = JSON.parse(readFileSync(new URL('../../desktop/src-tauri/tauri.conf.json', import.meta.url), 'utf8'));
+const policies: Record<string, string> = {
+  web: nginxHeaders.match(/add_header Content-Security-Policy "([^"]+)" always;/)![1],
+  desktop: desktopConfig.app.security.csp,
+};
+
+for (const [platform, policy] of Object.entries(policies)) {
+  test(`upload hash worker runs under ${platform} CSP`, async ({ page }) => {
+    // Apply the deployed policy to both the document and worker responses.
+    await page.route('**/*', async (route) => {
+      if (new URL(route.request().url()).pathname === '/csp-upload-test') {
+        await route.fulfill({ contentType: 'text/html', body: '<!doctype html><title>Upload CSP</title>', headers: { 'Content-Security-Policy': policy } });
+        return;
+      }
+      if (new URL(route.request().url()).pathname === '/csp-eval-test.js') {
+        await route.fulfill({ contentType: 'application/javascript', body: `
+          try { new Function('return 1')(); document.documentElement.dataset.evalBlocked = 'false'; }
+          catch { document.documentElement.dataset.evalBlocked = 'true'; }
+        ` });
+        return;
+      }
+      const response = await route.fetch();
+      await route.fulfill({ response, headers: { ...response.headers(), 'Content-Security-Policy': policy } });
+    });
+    await page.goto('/csp-upload-test');
+    const result = await page.evaluate(() => new Promise((resolve, reject) => {
+      const worker = new Worker('/src/features/uploads/hash.worker.ts', { type: 'module' });
+      worker.onerror = (event) => { worker.terminate(); reject(new Error(event.message)); };
+      worker.onmessage = ({ data }) => {
+        if (data.type === 'progress') return;
+        worker.terminate();
+        resolve(data);
+      };
+      worker.postMessage({ id: 'csp-test', file: new File(['abc'], 'track.flac') });
+    }));
+    expect(result).toEqual({
+      id: 'csp-test', type: 'done',
+      sha256: 'ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad',
+    });
+    // A page script observes CSP; Playwright's evaluate bypasses the eval restriction.
+    await page.addScriptTag({ url: '/csp-eval-test.js' });
+    await expect(page.locator('html')).toHaveAttribute('data-eval-blocked', 'true');
+  });
+}
diff --git a/deploy/nginx/security-headers.conf b/deploy/nginx/security-headers.conf
index ab6baf9..29b10ee 100644
--- a/deploy/nginx/security-headers.conf
+++ b/deploy/nginx/security-headers.conf
@@ -3,4 +3,5 @@
 add_header X-Content-Type-Options "nosniff" always;
 add_header Referrer-Policy "strict-origin-when-cross-origin" always;
 add_header X-Frame-Options "DENY" always;
-add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; media-src 'self' blob:; font-src 'self' data:; connect-src 'self'; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'" always;
+# hash-wasm считает SHA-256 загрузок в Web Worker; разрешаем WASM без JavaScript eval.
+add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'wasm-unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; media-src 'self' blob:; font-src 'self' data:; connect-src 'self'; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'" always;