CVE-2024-4439

MEDIUM EPSS 99.3%
Published May 3, 20242y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published May 3, 2024 2y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
99.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-80

Affected Products 6

VendorProductVersionRange
wordpresswordpress*≥6.0  –  ≤6.0.7
wordpresswordpress*≥6.1  –  ≤6.1.5
wordpresswordpress*≥6.2  –  ≤6.2.4
wordpresswordpress*≥6.3  –  ≤6.3.3
wordpresswordpress*≥6.4.0  –  ≤6.4.3
wordpresswordpress*≥6.5  –  ≤6.5.1

References 5

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

Remediation

  • core.trac.wordpress.org https://core.trac.wordpress.org/changeset/57951/branches/6.4/src/wp-includes/blocks/avatar.php
    Patch
  • core.trac.wordpress.org https://core.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=57950%40%2F&new=57950%40%2F&sfp_email=&sfph_mail=#file3
    Patch