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CVE-2024-12451

17
FAUCET Score

CVE-2024-12451 describes a Stored Cross-Site Scripting (XSS) vulnerability in the HTML5 Chat plugin for WordPress, affecting all versions up to and including 1.04. This flaw allows authenticated attackers with contributor-level access or higher to inject malicious web scripts through the 'HTML5CHAT' shortcode due to insufficient input sanitization. The vulnerability carries a CVSS score of 5.4 (Medium), indicating that successful exploitation could lead to limited impact on confidentiality and integrity when a user accesses an affected page. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.04CPE matchmatch criteria
cpe:2.3:a:proxymis:html5_chat:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
18.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 24th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/html5-chat/trunk/index.php
Patch
plugins.trac.wordpress.org / changeset/3443134
wordfence.com / threat-intel/vulnerabilities/id/98de0a50-8464-4ea6-bf55-add9aab2d716
Third Party Advisory