Reported vulnerability

Stop Spammers Security <= 2021.17 - Authenticated (Admin+) Stored Cross-Site Scripting

Q: Which versions of Stop Spammers Classic are affected?

Wordfence lists these affected versions: Start version unspecified, before 2021.18. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for Stop Spammers Classic?

Wordfence reports a fix for this issue in Stop Spammers Classic. It lists these fixed versions: 2021.18. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 9 Aug 2021

Updated 22 Jan 2024

CVE-2021-24517

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 4.8

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

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

Stop Spammers Classic

Software: plugin · stop-spammer-registrations-plugin
Affected versions: Start version unspecified, before 2021.18
Fix availability: Fix available
Fixed versions: 2021.18

Recommended action

Update to version 2021.18, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/1bf805fc-4b27-47c4-b24e-79158cffaac4?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of Stop Spammers Classic are affected?

Wordfence lists these affected versions: Start version unspecified, before 2021.18. Use the version checker above to compare your installed release with this report.

Is a fix available for Stop Spammers Classic?

Wordfence reports a fix for this issue in Stop Spammers Classic. It lists these fixed versions: 2021.18. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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