Persistent Cross-Site Scripting Vulnerability in thesystem by kostasmitroglou
CVE-2019-25311

5.1MEDIUM

Key Information:

Vendor

Kostasmitroglou

Status
Thesystem
Vendor
CVE Published:
11 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25311?

The thesystem version 1.0 contains a persistent cross-site scripting vulnerability that permits attackers to inject harmful scripts into various server data input fields, including operating_system, system_owner, system_username, system_password, system_description, and server_name. This allows attackers to execute arbitrary JavaScript, potentially compromising the security of users' browsers and sensitive data.

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Deploy the Patch

Affected Version(s)

thesystem 1.0

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-2019-25311 - Proof of Concept

References

https://www.exploit-db.com/exploits/47440
exploit
https://github.com/kostasmitroglou/thesystem
product
https://www.vulncheck.com/advisories/thesystem-persistent...
third-party-advisory

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

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