Cross-Site Request Forgery Vulnerability in MTCaptcha Plugin by WordPress
CVE-2025-13520

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Mtcaptcha WordPress Plugin
Vendor
CVE Published:
7 January 2026

What is CVE-2025-13520?

The MTCaptcha WordPress Plugin is susceptible to a Cross-Site Request Forgery (CSRF) attack due to improper nonce validation in its settings update functionality. This vulnerability affects all versions up to and including 2.7.2, enabling unauthenticated attackers to tamper with plugin settings, including sensitive information such as the private key. Attackers can exploit this flaw by tricking site administrators into executing actions, such as clicking on a malicious link, allowing unauthorized configuration changes.

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Affected Version(s)

MTCaptcha WordPress Plugin * <= 2.7.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/mtcaptcha/trun...
https://plugins.trac.wordpress.org/browser/mtcaptcha/tags...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammad Nur Ibnu Hubab
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