WP Block and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection Plugin StopBadBots < 6.67 - Unauthenticated SQL Injection

9.8
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE CVE-2021-24863
CVSS 9.8 (Critical)
Publicly Published November 15, 2021
Last Updated January 22, 2024
Researcher ZhongFu Su

Description

The WP Block and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection Plugin StopBadBots WordPress plugin before 6.67 does not sanitise and escape the User Agent before using it in a SQL statement to save it, leading to a SQL injection

Learn more about SQL Injection vulnerabilities and how to prevent them.

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Vulnerability Details for Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection

Software Type Plugin
Software Slug stopbadbots (view on wordpress.org)
Patched? Yes
Remediation Update to version 6.67, or a newer patched version
Affected Version
  • < 6.67
Patched Version
  • 6.67

Recent vulnerabilities in Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection

# Title CVE ID CVSS Researchers Date
1 Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection <= 11.58 - Insufficient Authorization to Unauthenticated Blocklist Bypass CVE-2025-9376 6.5 Jarno Vos (jarnovos) August 27, 2025
2 Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection <= 10.23 - Missing Authorization to Information Expsoure CVE-2024-4355 4.3 Krzysztof Zając May 29, 2024
3 StopBadBots <= 7.31 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2023-32496 4.4 Taihei Shimamine May 9, 2023
4 StopBadBots <= 7.23 - Missing Authorization to Arbitrary Plugin Installation CVE-2022-3883 6.5 István Márton November 18, 2022
5 WP Block and Stop Bad Bots <= 6.92 - SQL Injection CVE-2022-0949 9.8 cydave March 16, 2022
6 WP Block and Stop Bad Bots <= 6.88 - SQL Injection CVE-2021-25070 9.8 Krzysztof Zając March 8, 2022
7 Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection < 6.6.7 - Reflected Cross-Site Scripting 6.1 WPScanTeam August 25, 2021
8 Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection <= 6.61 - Reflected Cross-Site Scripting 6.1 August 25, 2021
9 WP Block and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection Plugin StopBadBots < 6.60 - Authenticated SQL Injection CVE-2021-24727 8.8 Martin Vierula August 6, 2021

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