CVE-2023-5817Public exploitNetwork attack vector

Stored XSS via unescaped shortcode color attribute

Published Oct 27, 2023 · Updated Apr 8, 2026

Stored XSS in freeben Neon text 1.1 and earlier allows remote authenticated users to inject scripts through a crafted shortcode color attribute. The neontext_box shortcode emits the user-supplied color value into page output without sufficient sanitization or context-appropriate escaping. Contributor-level access is required to store the payload in a post, and the script executes in a visitor's browser when the injected page is viewed.

CVSS severity6.4
Medium
EPSS probability0.52%
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 freeben Neon text 1.1 and earlier allows remote authenticated users to inject scripts through a crafted shortcode color attribute. The neontext_box shortcode emits the user-supplied color value into page output without sufficient sanitization or context-appropriate escaping. Contributor-level access is required to store the payload in a post, and the script executes in a visitor's browser when the injected page is viewed.

The record

CVE
CVE-2023-5817
Published
Oct 27, 2023
Updated
Apr 8, 2026
Vendor
freeben
Product
Neon text
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

freeben · Neon textversion=0 <=1.1

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
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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