Stored Cross-Site Scripting in Cotonti Siena by Cotonti
CVE-2021-47808

5.1MEDIUM

Key Information:

Vendor

Cotonti.com

Status
Cotonti Siena
Vendor
CVE Published:
15 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47808?

Cotonti Siena version 0.9.19 is susceptible to a stored cross-site scripting flaw within its admin configuration panel. The vulnerability arises when an attacker manipulates the 'maintitle' parameter to inject malicious JavaScript code. This code triggers when an administrator views the affected page, leading to potential unauthorized script execution. This threat highlights the importance of securing admin interfaces to protect sensitive configurations.

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Affected Version(s)

Cotonti Siena 0.9.19

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47808 - Proof of Concept

References

https://www.exploit-db.com/exploits/50016
exploit
https://cotonti.com
product
https://www.cotonti.com/download/
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Fatih İLGİN
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