Persistent Cross-Site Scripting in Textpattern CMS by Textpattern
CVE-2021-28002

5.4MEDIUM

Key Information:

Vendor

Textpattern

Status
Textpattern
Vendor
CVE Published:
19 August 2021

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-28002?

A persistent cross-site scripting vulnerability was identified in the Excerpt parameter of Textpattern CMS version 4.9.0. This flaw permits remote attackers to inject arbitrary JavaScript code through a crafted payload inserted into the URL field. Exploitation of this vulnerability is triggered when users access the 'Articles' page, enabling attackers to execute malicious scripts in the context of the user's session, potentially leading to unauthorized actions or data theft.

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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-2021-28002 - Proof of Concept

References

https://www.exploit-db.com/exploits/49617
x_refsource_MISC
https://www.linkedin.com/in/tushar-vaidya-2111s5/
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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