Cross-Site Scripting Vulnerability in MDwiki by MDwiki
CVE-2017-20239

5.1MEDIUM

Key Information:

Vendor

Dynalon

Status
Mdwiki
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20239?

MDwiki is prone to a cross-site scripting vulnerability that allows attackers to execute malicious JavaScript on a victim's browser. This vulnerability arises when attackers create crafted URLs that contain JavaScript payloads in the location hash. Since the application lacks adequate sanitization, the JavaScript executed can affect users directly, leading to potential data theft, session hijacking, or additional attacks within the browser context of the victim.

Affected Version(s)

MDwiki 0.6.2

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-2017-20239 - Proof of Concept

References

https://www.exploit-db.com/exploits/46097
exploit
https://www.vulncheck.com/advisories/mdwiki-cross-site-sc...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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

.