CVE-2024-4439

Description

WordPress Core is vulnerable to Stored Cross-Site Scripting via user display names in the Avatar block in various versions up to 6.5.2 due to insufficient output escaping on the display name. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. In addition, it also makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that have the comment block present and display the comment author's avatar.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 90.03% Top 5%
Affected: WordPress Foundation WordPress
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/threat-intel/vulnerabilities/id/e363c09a-4381-4b3a-951c-9a0ff5669016?source=cve
https://wordpress.org/news/2024/04/wordpress-6-5-2-maintenance-and-security-release/
https://core.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=57950%40%2F&new=57950%40%2F&sfp_email=&sfph_mail=#file3
https://core.trac.wordpress.org/changeset/57951/branches/6.4/src/wp-includes/blocks/avatar.php
https://www.wordfence.com/blog/2024/04/unauthenticated-stored-cross-site-scripting-vulnerability-patched-in-wordpress-core/

Frequently Asked Questions

What is the severity of CVE-2024-4439?
CVE-2024-4439 has been scored as a high severity vulnerability.
How to fix CVE-2024-4439?
To fix CVE-2024-4439, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-4439 being actively exploited in the wild?
It is possible that CVE-2024-4439 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~90% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4439?
CVE-2024-4439 affects WordPress Foundation WordPress.
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