CVE-2021-24964

MediumCVSS 6.1/10Last modified Jun 17, 2026

Description

The LiteSpeed Cache WordPress plugin before 4.4.4 does not properly verify that requests are coming from QUIC.cloud servers, allowing attackers to make requests to certain endpoints by using a specific X-Forwarded-For header value. In addition, one of the endpoint could be used to set CSS code if a setting is enabled, which will then be output in some pages without being sanitised and escaped. Combining those two issues, an unauthenticated attacker could put Cross-Site Scripting payloads in pages visited by users.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Jan 3, 2022
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-249655.4The Five Star Restaurant Reservations WordPress plugin before 2.4.8 does not have capability and CSRF checks in the rtb_welcome_set_scheduleCVE-2021-249664.9The Error Log Viewer WordPress plugin through 1.1.1 does not validate the path of the log file to clear, allowing high privilege users to clCVE-2021-249676.1The Contact Form & Lead Form Elementor Builder WordPress plugin before 1.6.4 does not sanitise and escape some lead values, which could alloCVE-2021-249685.7The Ultimate FAQ WordPress plugin before 2.1.2 does not have capability and CSRF checks in the ewd_ufaq_welcome_add_faq and ewd_ufaq_welcomeCVE-2021-249695.4The WordPress Download Manager WordPress plugin before 3.2.22 does not sanitise and escape Template data before outputting it in various pagCVE-2021-249707.2The All-in-One Video Gallery WordPress plugin before 2.5.0 does not sanitise and validate the tab parameter before using it in a require staCVE-2021-249715.4The WP Responsive Menu WordPress plugin before 3.1.7.1 does not have capability and CSRF checks in the wpr_live_update AJAX action, as well CVE-2021-249724.8The Pixel Cat WordPress plugin before 2.6.3 does not escape some of its settings, which could allow high privilege users to perform Cross-SiCVE-2021-249736.1The Site Reviews WordPress plugin before 5.17.3 does not sanitise and escape the site-reviews parameter of the glsr_action AJAX action (avaiCVE-2021-249745.4The Product Feed PRO for WooCommerce WordPress plugin before 11.0.7 does not have authorisation and CSRF check in some of its AJAX actions, CVE-2021-249756.1The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.3.24 does not sanitise and escape logged requests before outputting tCVE-2021-249766.1The Smart SEO Tool WordPress plugin before 3.0.6 does not sanitise and escape the search parameter before outputting it back in an attribute
CVE-2021-24964: Medium severity, CVSS 6.1 | Vulnix