CVE-2023-4603Public exploitNetwork attack vector

Script execution via unescaped printersettings reflection

Published Nov 13, 2023 · Updated Apr 8, 2026

Reflected XSS in Star CloudPRNT for WooCommerce 2.0.3 and earlier allows remote attackers to run scripts through a crafted link. The request handler reflects the printersettings parameter into a generated page without input sanitization or context-appropriate output escaping. Exploitation requires no authentication but requires a user to follow the attacker-supplied link, allowing script execution in that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Star CloudPRNT for WooCommerce 2.0.3 and earlier allows remote attackers to run scripts through a crafted link. The request handler reflects the printersettings parameter into a generated page without input sanitization or context-appropriate output escaping. Exploitation requires no authentication but requires a user to follow the attacker-supplied link, allowing script execution in that user's browser context.

The record

CVE
CVE-2023-4603
Published
Nov 13, 2023
Updated
Apr 8, 2026
Vendor
Star Micronics
Product
Star CloudPRNT for WooCommerce
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=2.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Star Micronics · Star CloudPRNT for WooCommerceversion=0 <=2.0.3

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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