Description

WordPress is prone to multiple vulnerabilities, including XML External Entity injection and information disclosure vulnerabilities. Exploiting these issues could allow an attacker to obtain sensitive information which could be used to launch further attacks. WordPress versions 5.6.x ranging from 5.6 and up to (and including) 5.6.2 are vulnerable.

Remediation

Update to WordPress version 5.6.3 or latest

References

https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/

https://github.com/motikan2010/CVE-2021-29447

https://wordpress.org/support/wordpress-version/version-5-6-3/

Related Vulnerabilities

MySQL CVE-2017-3644 Vulnerability (CVE-2017-3644)

Drupal Core 4.5.x Mail Header Injection (4.5.0 - 4.5.7)

WordPress Plugin RegistrationMagic-Custom Registration Forms, User Registration, Payment, and User Login Multiple Vulnerabilities (4.6.0.3)

IBM RTC Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2020-4525)

WordPress Plugin Easing Slider Multiple Cross-Site Scripting Vulnerabilities (2.2.0.6)

Severity

High

Classification

CVE-2021-29447 CVE-2021-29450 CWE-200 CWE-611 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update