Medium severity · published May 3, 2024
CVE-2024-4439
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…
6.1
CVSS
71%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)71.0% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
WordPress · WordPress
6.0 through 6.0.7; 6.1 through 6.1.5; 6.2 through 6.2.4; 6.3 through 6.3.3; 6.4.0 through 6.4.3; 6.5 through 6.5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4439
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4439
Patch
https://core.trac.wordpress.org/changeset/57951/branches/6.4/src/wp-includes/blocks/avatar.php
Patch
https://core.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=57950%40%2F&new=57950%40%2F&sfp_email=&sfph_mail=#file3
Vendor Advisory
https://wordpress.org/news/2024/04/wordpress-6-5-2-maintenance-and-security-release/
Exploit
https://www.wordfence.com/blog/2024/04/unauthenticated-stored-cross-site-scripting-vulnerability-patched-in-wordpress-core/
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/e363c09a-4381-4b3a-951c-9a0ff5669016?source=cve
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