> 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/fr/web/xss/xss-in-a-javascript-string-with-encoded-angle-brackets-encoded-double-quotes-and-escaped-apostrophe.md).
# XSS dans une chaîne JavaScript avec chevrons encodés, guillemets doubles encodés et apostroph
Notes sur le XSS dans une chaîne JavaScript avec chevrons encodés, guillemets doubles encodés et apostrophe pour les laboratoires PortSwigger Web Security Academy, y compris le flux de travail d’exploitation, les tests de charge utile,
### XSS réfléchi dans une chaîne JavaScript avec les chevrons et les guillemets doubles encodés en HTML, et les apostrophes simples échappées
Ce labo contient une vulnérabilité XSS réfléchie : la valeur de recherche est insérée dans une chaîne JavaScript. `<`/`>` et les guillemets doubles sont encodés en HTML, et les apostrophes simples sont échappées. Objectif : sortir de la chaîne JavaScript et appeler `alert()`.
Extrait du script observé
```javascript
var searchTerms = '</h1>/'';
document.write('');
```
Contraintes observées
* L'apostrophe simple est échappée (`/'`).
```javascript
test'
```
Charge utile fournie
```javascript
test/'+alert(0);//
```
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://hacking-notes.jord4n.pro/fr/web/xss/xss-in-a-javascript-string-with-encoded-angle-brackets-encoded-double-quotes-and-escaped-apostrophe.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
+'){kind=tracking}
');
```
Contraintes observées
* L'apostrophe simple est échappée (`/'`).
```javascript
test'
```
