CVE-2024-10893Public exploitNetwork attack vector

Stored XSS via unescaped confirmation message title

Published Dec 3, 2024 · Updated Dec 3, 2024

Stored XSS in wpdevelop Booking Calendar before 10.6.5 allows remote authenticated users to execute scripts through a saved message title. The Booking Confirmation Message title accepts HTML event-handler markup without sufficient sanitization or output escaping, then renders it when Send is selected. Administrator privileges and a site that blocks unfiltered_html, including a multisite deployment, are required; another user's browser executes the stored script.

CVSS severity4.8
Medium
EPSS probability0.31%
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 wpdevelop Booking Calendar before 10.6.5 allows remote authenticated users to execute scripts through a saved message title. The Booking Confirmation Message title accepts HTML event-handler markup without sufficient sanitization or output escaping, then renders it when Send is selected. Administrator privileges and a site that blocks unfiltered_html, including a multisite deployment, are required; another user's browser executes the stored script.

The record

CVE
CVE-2024-10893
Published
Dec 3, 2024
Updated
Dec 3, 2024
Vendor
wpdevelop
Product
Booking Calendar
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2024Record 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 <10.6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

wpdevelop · Booking Calendarversion=0 <10.6.5

Published CVSS scores

4.8CISA-ADPCVSS: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.

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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')
T1203Exploitation for Client Execution

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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