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CVE-2023-30321

24
FAUCET Score

CVE-2023-30321 describes a critical Cross-Site Scripting (XSS) vulnerability within the textMessage field of the /src/chatbotapp/LoginServlet.java component in wliang6 ChatEngine, specifically affecting commit fded8e710ad59f816867ad47d7fc4862f6502f3e. This flaw allows authenticated attackers to execute arbitrary code in the context of other users. With a CVSS score of 9.0 (CRITICAL), this vulnerability has a low attack complexity and requires user interaction, but can lead to high impacts on confidentiality, integrity, and availability. The EPSS score is very low, suggesting a minimal likelihood of exploitation in the wild. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE. It is not listed on the CISA KEV catalog or the Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:chatengine_project:chatengine:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.94%
Probability of exploitation in next 30 days
EPSS Percentile
57.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0094 is in the 65th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / wliang6/ChatEngine/blob/fded8e710ad59f816867ad47d7fc4862f6502f3e/src/chatbotapp/LoginServlet.java
Exploit
payatu.com / advisory/cross-site-scripting-xss-vulnerability-in-loginservlet-java-wliang6-chatengine-allows-attackers-to-execute-arbitrary-code
Third Party Advisory