CVE-2023-2102Network attack vector

Stored script execution via unescaped display name

Published Apr 15, 2023 · Updated Feb 6, 2025

Stored XSS in Easy!Appointments before 1.5.0 allows remote authenticated users to execute scripts through a crafted display name. The backend_header.php view inserts user_display_name directly into HTML; the patch wraps that value in the application's escaping helper. Administrative access is required to set the name, and another backend user's browser must render it; executed code acts in that viewer's session.

CVSS severity4.8
Medium
EPSS probability0.50%
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 Easy!Appointments before 1.5.0 allows remote authenticated users to execute scripts through a crafted display name. The backend_header.php view inserts user_display_name directly into HTML; the patch wraps that value in the application's escaping helper. Administrative access is required to set the name, and another backend user's browser must render it; executed code acts in that viewer's session.

The record

CVE
CVE-2023-2102
Published
Apr 15, 2023
Updated
Feb 6, 2025
Vendor
Alex Tselegidis
Product
Easy!Appointments
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 2025Record 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=unspecified <1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Alex Tselegidis · Easy!Appointmentsversion=unspecified <1.5.0

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
6.8huntr.devCVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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