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Vulnerability record · CVE-2021-24299 · published 17 May 2021

CVE-2021-24299: Catzsoft redi restaurant reservation cross-site scripting vulnerability

CCatzsoft · Redi Restaurant Reservation

The ReDi Restaurant Reservation WordPress plugin before 21.0426 provides the functionality to let users make restaurant reservations. These reservations are stored and can be listed on an 'Upcoming' page provided by the plugin. An unauthenticated user can fill in the form to make a restaurant reservation. The form to make a restaurant reservation field called 'Comment' does not use proper input validation and can be used to store XSS payloads. The XSS payloads will be executed when the plugin user goes to the 'Upcoming' page, which is an external website https://upcoming.reservationdiary.eu/ loaded in an iframe, and the stored reservation with XSS payload is loaded.

6.1 CVSS 3.1 Medium EPSS 5.5% · top 7.5% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

The ReDi Restaurant Reservation WordPress plugin before 21.0426 provides the functionality to let users make restaurant reservations. These reservations are stored and can be listed on an 'Upcoming' page provided by the plugin. An unauthenticated user can fill in the form to make a restaurant reservation. The form to make a restaurant reservation field called 'Comment' does not use proper input validation and can be used to store XSS payloads. The XSS payloads will be executed when the plugin user goes to the 'Upcoming' page, which is an external website https://upcoming.reservationdiary.eu/ loaded in an iframe, and the stored reservation with XSS payload is loaded.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/162756/WordPress-ReDi-Restaurant-Reservation-21.0307-Cross-Site-Scripting.html ExploitThird Party Advisory
https://wpscan.com/vulnerability/fd6ce00b-8c5f-4180-b648-f47b37303670 ExploitThird Party Advisory
http://packetstormsecurity.com/files/162756/WordPress-ReDi-Restaurant-Reservation-21.0307-Cross-Site-Scripting.html ExploitThird Party Advisory
https://wpscan.com/vulnerability/fd6ce00b-8c5f-4180-b648-f47b37303670 ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-24299), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.