Cross-Site Scripting in Textpattern CMS Affects Remote Code Execution
CVE-2021-28001

5.4MEDIUM

Key Information:

Vendor

Textpattern

Status
Textpattern
Vendor
CVE Published:
19 August 2021

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-28001?

A cross-site scripting vulnerability exists in Textpattern CMS version 4.8.4, which could allow an attacker to execute arbitrary code. This is achieved by injecting a crafted payload into the Comments parameter, exploited when users access specific URLs. By manipulating the URL field, remote attackers can leverage this flaw to compromise the site. For more details on the exploit, refer to the shared resources.

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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-2021-28001 - Proof of Concept

References

https://www.exploit-db.com/exploits/49616
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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