PT-2025-1853 · WordPress · Html5 Chat Plugin

Peter Thaleikis · Published 2025-01-30 · Updated 2025-01-31 · CVE-2024-12451

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions HTML5 Chat Plugin for WordPress versions 1.04 and earlier

Description The issue concerns a Stored Cross-Site Scripting vulnerability in the HTML5 chat plugin for WordPress. This vulnerability is due to insufficient input sanitization and output escaping on user-supplied attributes in the plugin's 'HTML5CHAT' shortcode. As a result, authenticated attackers with contributor-level access and above can inject arbitrary web scripts in pages. These scripts will execute whenever a user accesses an injected page.

Recommendations For versions 1.04 and earlier, update to a version later than 1.04 to resolve the issue. As a temporary workaround, consider disabling the 'HTML5CHAT' shortcode until a patch is available. Restrict access to the plugin's attributes to minimize the risk of exploitation. Avoid using user-supplied attributes in the 'HTML5CHAT' shortcode until the issue is resolved.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-12451

Affected Products

Html5 Chat Plugin

References · 8

• https://plugins.trac.wordpress.org/browser/html5-chat/trunk/index.php#L159 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-12451 · Security Note
• https://osv.dev/vulnerability/CVE-2024-12451 · Vendor Advisory
• https://t.me/cvenotify/109510 · Telegram Post
• https://plugins.trac.wordpress.org/changeset/3443134 · Note
• https://twitter.com/CVEnew/status/1884962380863475988 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/98de0a50-8464-4ea6-bf55-add9aab2d716?source=cve · Note
• https://twitter.com/VulmonFeeds/status/1885037912703615366 · Twitter Post