Authenticated self-XSS via theme uploads in WordPress
CVE-2020-4049

2.4LOW

Key Information:

Vendor
Wordpress
Status
WordPress-develop
Vendor
CVE Published:
12 June 2020

Summary

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).

Affected Version(s)

wordpress-develop >= 5.4.0, < 5.4.2 < 5.4.0, 5.4.2

wordpress-develop >= 5.3.0, < 5.3.4 < 5.3.0, 5.3.4

wordpress-develop >= 5.2.0, < 5.2.7 < 5.2.0, 5.2.7

References

https://wordpress.org/news/2020/06/wordpress-5-4-2-securi...
x_refsource_MISC
https://github.com/WordPress/wordpress-develop/security/a...
x_refsource_CONFIRM
https://github.com/WordPress/wordpress-develop/commit/404...
x_refsource_MISC

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
2.4
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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