CVE-2023-6005Public exploitNetwork attack vector

Administrator stored XSS via unescaped custom metadata

Published Jan 16, 2024 · Updated Jun 20, 2025

Stored XSS in EventON before 4.5.5 and EventON Lite before 2.2.7 allows remote authenticated users to execute script via custom event metadata. A custom metadata value is stored without sanitization or output escaping and executes when an administrator reopens the event editor. Administrator access is required to save the payload, and a later edit view triggers script execution in the viewer's browser even when unfiltered_html is disabled.

CVSS severity4.8
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in EventON before 4.5.5 and EventON Lite before 2.2.7 allows remote authenticated users to execute script via custom event metadata. A custom metadata value is stored without sanitization or output escaping and executes when an administrator reopens the event editor. Administrator access is required to save the payload, and a later edit view triggers script execution in the viewer's browser even when unfiltered_html is disabled.

The record

CVE
CVE-2023-6005
Published
Jan 16, 2024
Updated
Jun 20, 2025
Vendor
AshanJay Designs LLC
Product
EventON
Classifications
CWE-79, CWE-116, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.5.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

AshanJay Designs LLC · EventONversion=0 <4.5.5
AshanJay Designs LLC · EventON Liteversion=0 <2.2.7

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-116Improper Encoding or Escaping of Output
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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