How severe is CVE-2024-8663?

CVE-2024-8663 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-8663 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8663?

CVE-2024-8663 affects Wpsimplebookingcalendar Wp Simple Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8663?

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

Does CVE-2024-8663 have an EU (EUVD) identifier?

Yes. CVE-2024-8663 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49333.

When was CVE-2024-8663 published?

CVE-2024-8663 was published on 2024-09-13 and last updated on 2026-06-17.

CVE-2024-8663

CVE-2024-8663 is a medium-severity vulnerability in Wpsimplebookingcalendar Wp Simple Booking Calendar with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49333
Weakness: CWE-79
Affected product: Wpsimplebookingcalendar Wp Simple Booking Calendar
Published: 2024-09-13
Last modified: 2026-06-17

Description

The WP Simple Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg & remove_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.0.10. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Frequently asked questions

What is CVE-2024-8663?: The WP Simple Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg & remove_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.0.10. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
How severe is CVE-2024-8663?: CVE-2024-8663 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-8663 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8663?: CVE-2024-8663 affects Wpsimplebookingcalendar Wp Simple Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8663?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-8663 have an EU (EUVD) identifier?: Yes. CVE-2024-8663 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49333.
When was CVE-2024-8663 published?: CVE-2024-8663 was published on 2024-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wpsimplebookingcalendar:wp_simple_booking_calendar:*:*:*:*:*:wordpress:*:*

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