| Título | Scada-LTS 2.7.8.1 Cross Site Scripting (XSS) Stored |
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| Descrição | # Cross-Site Scripting (XSS) Stored endpoint `maintenance_events.shtm` parameter `Alias`
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## Summary
A Stored Cross-Site Scripting (XSS) vulnerability was identified in the `maintenance_events.shtm` endpoint of the _SCADA-LTS_ application. This vulnerability allows attackers to inject malicious scripts into the `Alias` parameter. The injected payload is stored on the server and executed automatically in the browser of any user who accesses the affected data source entry, creating a persistent attack vector.
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## Details
**Vulnerable Endpoint:** `POST /maintenance_events.shtm`
**Parameter:** `Alias`
The application does not properly validate or sanitize input in the `Alias` field. As a result, an attacker can inject JavaScript code, which is stored in the system and later rendered in the application’s interface, leading to automatic execution in the user's browser.
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## PoC
**Payload:**
`<img src=x onerror=alert("Maintenance")>`
### Steps to Reproduce:
1. Log in to the _SCADA-LTS_ application with an account that has permission to create or edit maintenance events.
2. Navigate to the **Maintenance vents** section and select **Add new event** or edit an existing entry.
![[Pasted image 20250722191532.png]]
1. In the **Alias** field, insert the payload above:
`<img src=x onerror=alert("Maintenance")>`
2. Fill in any other required fields and click **Save**.
![[Pasted image 20250722191636.png]]
5. The stored payload is executed immediately in the browser, confirming the Stored XSS vulnerability.
![[Pasted image 20250722191655.png]]
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## Impact
Stored XSS attacks can lead to severe consequences, including:
- **Session hijacking:** Stealing cookies or authentication tokens to impersonate users
- **Credential theft:** Capturing usernames and passwords through malicious scripts
- **Malware delivery:** Distributing harmful code to application users
- **Privilege escalation:** Compromising higher-privilege accounts via persistent scripts
- **Data manipulation or defacement:** Altering displayed content in the application
- **Reputation damage:** Eroding trust among system users and stakeholders |
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| Fonte | ⚠️ https://github.com/marcelomulder/CVE/blob/main/Scada-LTS/Stored%20XSS%20endpoint%20maintenance_events.shtm%20parameter%20Alias.md |
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| Utilizador | marceloQz (UID 87549) |
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| Submissão | 09/08/2025 08h17 (há 11 meses) |
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| Moderação | 20/08/2025 12h52 (11 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 320767 [Scada-LTS até 2.7.8.1 maintenance_events.shtm Alias Script de Site Cruzado] |
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| Pontos | 20 |
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