CVE-2026-1083Network attack vector

Stored XSS via unescaped length field settings

Published Jan 28, 2026 · Updated Jan 28, 2026

Stored XSS in CodePeople Appointment Hour Booking 1.5.60 and earlier allows remote authenticated users to execute scripts in the form builder. The Min length/characters and Max length/characters settings accept unsanitized values that the form builder inserts into page output without escaping. Administrator-level access is required, and the issue is reachable only on WordPress multisite installations or installations where unfiltered_html is disabled.

CVSS severity4.4
Medium
EPSS probability0.27%
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 CodePeople Appointment Hour Booking 1.5.60 and earlier allows remote authenticated users to execute scripts in the form builder. The Min length/characters and Max length/characters settings accept unsanitized values that the form builder inserts into page output without escaping. Administrator-level access is required, and the issue is reachable only on WordPress multisite installations or installations where unfiltered_html is disabled.

The record

CVE
CVE-2026-1083
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
CodePeople
Product
Appointment Hour Booking
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 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=* <=1.5.60

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CodePeople · Appointment Hour Bookingversion=* <=1.5.60

Published CVSS scores

4.4WordfenceCVSS:3.1/AV:N/AC:H/PR:H/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
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.

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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