TI-2024-08036 Aliases CVE-2024-8663 GHSA-r9gm-g7gv-4f8p

WP Simple Booking Calendar <= 2.0.10 - Reflected Cross-Site Scripting

LOW 28CWE-79Published 2024-09-13 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0044 38th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
murgroland	WP Simple Booking Calendar	up to 2.0.10	—	No fix listed	CNA

WP Simple Booking Calendar Vendormurgroland Affected up to 2.0.10 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wpsimplebookingcalendar:wp_simple_booking_calendar::::::wordpress::*	before 2.0.11	Vulnerable	Wpsimplebookingcalendar

cpe:2.3:a:wpsimplebookingcalendar:wp_simple_booking_calendar:*:*:*:*:*:wordpress:*:* Versions before 2.0.11 Vulnerable ·Wpsimplebookingcalendar

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-8663
2026-10-03 Alias added: GHSA-r9gm-g7gv-4f8p

References

Patch 1

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3150474%40wp-simple-booking-calendar&new=3150474%40wp-simple-booking-calendar&sfp_email=&sfph_mail=

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/cad4300f-02f9-4c9f-9bb3-1c9da8b78ac9?source=cve

Other 2

TI-2026-83495 Missing authorization in WP Booking System allows note deletion CVSS 3.1CRITICAL 9.1
TI-2026-76013 Missing authorization in WP Booking System exposes booking emails CVSS 3.1HIGH 7.5
TI-2026-76022 Missing authorization in WP Booking System allows access escalation CVSS 3.1MEDIUM 6.8
TI-2026-76021 Missing authorization in WP Booking System exposes booking data CVSS 3.1MEDIUM 6.5
TI-2026-70283 SQL injection in WP Booking System WordPress plugin CVSS 3.1MEDIUM 6.5
TI-2026-75287 SQL injection in WP Booking System plugin via orderby parameter CVSS 3.1MEDIUM 4.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences