CVE-2023-51403
WordPress vulnerability analysis and mitigation

Overview

The vulnerability (CVE-2023-51403) is a Stored Cross-Site Scripting (XSS) issue affecting the Nicdark Restaurant Reservations WordPress plugin versions up to and including 1.8. The vulnerability was discovered and reported by resecured.io on October 15, 2023, and was publicly disclosed on December 27, 2023 (Patchstack).

Technical details

The vulnerability is classified as an Improper Neutralization of Input During Web Page Generation (CWE-79) that allows for Stored Cross-Site Scripting. It has received a CVSS v3.1 base score of 5.4 (Medium) from NVD with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, while Patchstack assigned it a slightly higher score of 6.5 (Medium) (NVD).

Impact

The vulnerability could allow authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses an injected page, potentially leading to unauthorized actions, data theft, or page manipulation (WPScan).

Mitigation and workarounds

The vulnerability has been fixed in version 1.9 of the Restaurant Reservations plugin. Users are advised to update to version 1.9 or later to remove the vulnerability (Patchstack).

Additional resources


SourceThis report was generated using AI

Related WordPress vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-47552CRITICAL9.8
  • dzs-videogallery
NoNoJan 07, 2026
CVE-2025-46494HIGH7.1
  • widgetkit-pro
NoNoJan 07, 2026
CVE-2025-46434MEDIUM6.5
  • theplus_elementor_addon
NoYesJan 07, 2026
CVE-2025-14275MEDIUM6.4
  • jeg-elementor-kit
NoYesJan 08, 2026
CVE-2025-12640MEDIUM4.3
  • folders
NoYesJan 08, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management