CVE-2024-13821Network attack vector

Unauthenticated booking manipulation via missing re-verification

Published Feb 12, 2025 · Updated Jun 3, 2026

Improper authorization in wpdevelop Booking Calendar 10.10 and earlier allows remote attackers to alter their confirmed bookings. The post-confirmation booking-change path processes modification requests without re-verifying that the requester controls the booking. No WordPress account is required, but an attacker must first possess a booking that has been made and confirmed; the documented impact is limited to altering that booking.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in wpdevelop Booking Calendar 10.10 and earlier allows remote attackers to alter their confirmed bookings. The post-confirmation booking-change path processes modification requests without re-verifying that the requester controls the booking. No WordPress account is required, but an attacker must first possess a booking that has been made and confirmed; the documented impact is limited to altering that booking.

The record

CVE
CVE-2024-13821
Published
Feb 12, 2025
Updated
Jun 3, 2026
Vendor
wpdevelop
Product
Booking Calendar
Classifications
CWE-285, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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 <=10.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wpdevelop · Booking Calendarversion=0 <=10.10

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1190Exploit Public-Facing Application

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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