The Stop Spammers Security | Block Spam Users, Comments, Forms WordPress plugin before 2021.18 does not escape some of its settings, allowing high privilege users such as admin to set Cross-Site Scripting payloads in them even when the unfiltered_html capability is disallowed
CVE-2021-24517 is a medium severity with CVSS 4.8 Stored Cross-Site Scripting issue affecting the Plugin Stop Spammers Classic. It affects Versions before 2021.18 and is fixed in 2021.18.
CVE-2021-24517 is tracked for the Plugin Stop Spammers Classic as medium severity with CVSS 4.8. The affected range is Versions before 2021.18. Update Stop Spammers Classic to 2021.18 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
stop-spammer-registrations-plugin
View on wordpress.org
|
| CVE | CVE-2021-24517 |
| Patched Versions |
2021.18
|
| Affected Versions |
Versions before 2021.18
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Stop Spammers Security <= 2022.5 - Unauthenticated PHP Object Injection
Stop Spammers Security <= 2022.6 - Reflected Cross-Site Scripting
Stop Spammers <= 2021.8 - Reflected Cross-Site Scripting
Anti-Spam: Spam Protection | Block Spam Users, Comments, Forms <= 2024.7 - Cross-Site Request Forgery to Multiple Administrative Actions
Stop Spammers Security | Block Spam Users, Comments, Forms <= 2024.4 - Cross-Site Request Forgery (CSRF) via sfs_process
Stop Spammers Security <= 2022.6 - Authenticated (Admin+) Stored Cross-Site Scripting
Stop Spammers Classic <= 2026.1 - Cross-Site Request Forgery via Email Allowlist
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