How severe is CVE-2023-51520?

CVE-2023-51520 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-51520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51520?

CVE-2023-51520 affects Wpbookingcalendar Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51520?

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

Does CVE-2023-51520 have an EU (EUVD) identifier?

Yes. CVE-2023-51520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56232.

When was CVE-2023-51520 published?

CVE-2023-51520 was published on 2024-02-01 and last updated on 2026-06-17.

CVE-2023-51520

CVE-2023-51520 is a medium-severity vulnerability in Wpbookingcalendar Booking Calendar with a CVSS 3.x base score of 6.5. 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 6.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56232
Weakness: CWE-79
Affected product: Wpbookingcalendar Booking Calendar
Published: 2024-02-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-51520?: 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.
How severe is CVE-2023-51520?: CVE-2023-51520 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-51520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51520?: CVE-2023-51520 affects Wpbookingcalendar Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51520 have an EU (EUVD) identifier?: Yes. CVE-2023-51520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56232.
When was CVE-2023-51520 published?: CVE-2023-51520 was published on 2024-02-01 and last updated on 2026-06-17.

References

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

Affected products (1)

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

More vulnerabilities in Wpbookingcalendar Booking Calendar

CVE-2024-1207 — Critical (CVSS 9.8): The WP Booking Calendar plugin for WordPress is vulnerable to SQL Injection via the…
CVE-2024-6930 — Medium (CVSS 6.4): The WP Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'type' attribute…
CVE-2023-4620 — Medium (CVSS 6.1): The Booking Calendar WordPress plugin before 9.7.3.1 does not sanitize and escape some of its booking from data,…
CVE-2022-33177 — Medium (CVSS 5.4): Cross-Site Request Forgery (CSRF) vulnerability in WPdevelop/Oplugins Booking Calendar plugin <= 9.2.1 at WordPress…
CVE-2024-13821 — Medium (CVSS 5.3): The WP Booking Calendar plugin for WordPress is vulnerable to Unauthenticated Post-Confirmation Booking Manipulation in…

All CVEs affecting Wpbookingcalendar Booking Calendar →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →