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CVE-2021-24299

MediumPublished

ReDi Restaurant Reservations < 21.0426 - Unauthenticated Stored Cross-Site Scripting (XSS)

Published: May 17, 2021
Updated: Aug 3, 2024
Assigning CNA: WPScan
Evidence observed: May 24, 2021

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

5.5%

Low · next 30 days

Percentile: 92.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

WordPress Plugin ReDi Restaurant Reservation 21.0307 - 'Comment' Stored Cross-Site Scripting (XSS)Exploit
Bastijn Ouwendijk · php · May 24, 2021

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