Seraphinite Accelerator <= 2.20.28 - Reflected Cross-Site Scripting via rt

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-49740
CVSS 6.1 (Medium)
Publicly Published December 1, 2023
Last Updated December 6, 2023
Researcher Le Ngoc Anh - sun*inc

Description

The Seraphinite Accelerator plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘rt’ parameter in versions up to, and including, 2.20.28 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Seraphinite Accelerator

Software Type Plugin
Software Slug seraphinite-accelerator (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.20.29, or a newer patched version
Affected Version
  • <= 2.20.28
Patched Version
  • 2.20.29

Recent vulnerabilities in Seraphinite Accelerator

# Title CVE ID CVSS Researchers Date
1 Seraphinite Accelerator <= 2.29.18 - Reflected Cross-Site Scripting CVE-2026-17532 6.1 Alireza August 4, 2026
2 Seraphinite Accelerator <= 2.28.14 - Authenticated (Subscriber+) Exposure of Sensitive Information to an Unauthorized Actor CVE-2026-3058 4.3 lucsob March 3, 2026
3 Seraphinite Accelerator <= 2.28.14 - Missing Authorization to Authenticated (Subscriber+) Log Clearing CVE-2026-3056 4.3 Nabil Irawan March 3, 2026
4 Seraphinite Accelerator <= 2.27.21 - Cross-Site Request Forgery to Multiple Administrative Actions CVE-2025-6059 4.3 Nabil Irawan April 29, 2025
5 Seraphinite Accelerator <= 2.22.15 (2.21.13 PRO) - Authenticated (Subscriber+) Information Exposure CVE-2024-54222 4.3 Dave Jong December 19, 2024
6 Seraphinite Accelerator <= 2.20.52 - Authenticated (Subscriber+) Server-Side Request Forgery in OnAdminApi_HtmlCheck CVE-2024-1568 6.4 Lucio Sá February 27, 2024
7 Seraphinite Accelerator <= 2.20.47 - Unauthenticated Sensitive Information Exposure via Log File CVE-2024-22138 5.3 Joshua Chan January 8, 2024
8 Seraphinite Accelerator (Base, cache only) <= 2.20.31 - Cross-Site Request Forgery CVE-2023-5611 4.3 Erwan LR October 29, 2023
9 Seraphinite Accelerator <= 2.20.28 - Arbitrary Redirect via 'redir' CVE-2023-5610 5.4 Erwan LR October 27, 2023
10 Seraphinite Accelerator <= 2.20.28 - Reflected Cross-Site Scripting via 'rt' CVE-2023-5609 6.1 Krzysztof Zając October 27, 2023

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