How severe is CVE-2024-13821?

CVE-2024-13821 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-13821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-13821?

CVE-2024-13821 affects Wpbookingcalendar Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-13821?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-13821 have an EU (EUVD) identifier?

Yes. CVE-2024-13821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-51755.

When was CVE-2024-13821 published?

CVE-2024-13821 was published on 2025-02-12 and last updated on 2026-06-17.

CVE-2024-13821

CVE-2024-13821 is a medium-severity vulnerability in Wpbookingcalendar Booking Calendar with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-51755
Weakness: CWE-285
Affected product: Wpbookingcalendar Booking Calendar
Published: 2025-02-12
Last modified: 2026-06-17

Description

The WP Booking Calendar plugin for WordPress is vulnerable to Unauthenticated Post-Confirmation Booking Manipulation in all versions up to, and including, 10.10. This is due to the plugin not properly requiring re-verification after a booking has been made and a change is being attempted. This makes it possible for unauthenticated attackers to manipulate their confirmed bookings, even after they have been approved.

Frequently asked questions

What is CVE-2024-13821?: The WP Booking Calendar plugin for WordPress is vulnerable to Unauthenticated Post-Confirmation Booking Manipulation in all versions up to, and including, 10.10. This is due to the plugin not properly requiring re-verification after a booking has been made and a change is being attempted. This makes it possible for unauthenticated attackers to manipulate their confirmed bookings, even after they have been approved.
How severe is CVE-2024-13821?: CVE-2024-13821 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-13821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-13821?: CVE-2024-13821 affects Wpbookingcalendar Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-13821?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-13821 have an EU (EUVD) identifier?: Yes. CVE-2024-13821 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-51755.
When was CVE-2024-13821 published?: CVE-2024-13821 was published on 2025-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wpbookingcalendar:booking_calendar:*:*:*:*:*:wordpress:*:*

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