TI-2023-28172 Aliases CVE-2023-51520 GHSA-52rw-98p2-v2g3

WordPress Booking Calendar Plugin < 9.7.4 is vulnerable to Cross Site Scripting (XSS)

LOW 29CWE-79Published 2024-02-01 · Updated 2026-04-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: Fixed

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

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPdevelop / Oplugins WP Booking Calendar allows Stored XSS.This issue affects WP Booking Calendar: from n/a before 9.7.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00328 26th percentileScored 2026-11-07

Fix Fixed WP Booking Calendar (WPdevelop / Oplugins): 9.7.4

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
WPdevelop / Oplugins	WP Booking Calendar	before 9.7.4	9.7.4	Patch available	CNA

WP Booking Calendar VendorWPdevelop / Oplugins Affected before 9.7.4 Fixed in 9.7.4 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wpbookingcalendar:booking_calendar::::::wordpress::*	before 9.7.4	Vulnerable	Wpbookingcalendar

cpe:2.3:a:wpbookingcalendar:booking_calendar:*:*:*:*:*:wordpress:*:* Versions before 9.7.4 Vulnerable ·Wpbookingcalendar

Remediation

Fix · CNA WP Booking Calendar (WPdevelop / Oplugins) Fixed in 9.7.4

Timeline

2026-10-02 Threatist record created from CVE-2023-51520
2026-10-03 Alias added: GHSA-52rw-98p2-v2g3

References

Advisory 1

https://patchstack.com/database/vulnerability/booking/wordpress-booking-calendar-plugin-9-7-4-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2023-09778 WordPress Booking Calendar plugin <= 9.4.3 - SQL Injection CVSS 3.1HIGH 7.6

Sources

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