CVE-2021-24245 — Stop Spammers < 2021.9 - Reflected Cross-Site Scripting (XSS)

Description

The Stop Spammers WordPress plugin before 2021.9 did not escape user input when blocking requests (such as matching a spam word), outputting it in an attribute after sanitising it to remove HTML tags, which is not sufficient and lead to a reflected Cross-Site Scripting issue.

Affected products

Vendor	Product	Affected	Fixed
Trumani	Stop Spammers	2021.9 – < 2021.9	2021.9

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

WordPress Plugin Stop Spammers 2021.8 - 'log' Reflected Cross-site Scripting (XSS) EDB-49880 · webapps · May 19, 2021

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

WordPress Stop Spammers <2021.9 - Cross-Site Scripting http/cves/2021/CVE-2021-24245.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.