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.

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

Anıl Baran Yelken
.