Description

In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. This does require an admin to upload the theme, and is low severity self-XSS. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

Remediation

References

CVE-2020-4049

Related Vulnerabilities

Jenkins Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-3723)

Oracle HTTP Server Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Vulnerability (CVE-2021-4181)

OpenSSL Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2017-3736)

WordPress Plugin Custom Body Class Cross-Site Request Forgery (0.6.0)

Joomla Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2012-3829)

Severity

Low

Classification

CVE-2020-4049 CWE-707 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update Known Vulnerabilities