Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection <= 11.58 - Insufficient Authorization to Unauthenticated Blocklist Bypass

6.5
Incorrect Authorization
CVE CVE-2025-9376
CVSS 6.5 (Medium)
Publicly Published August 27, 2025
Last Updated August 28, 2025
Researcher Jarno Vos (jarnovos)

Description

The Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection plugin for WordPress is vulnerable to unauthorized access of data due to an insufficient capability check on the 'stopbadbots_check_wordpress_logged_in_cookie' function in all versions up to, and including, 11.58. This makes it possible for unauthenticated attackers to bypass blocklists, rate limits, and other plugin functionality.

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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 11.59, or a newer patched version
Affected Version
  • <= 11.58
Patched Version
  • 11.59

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 <= 10.23 - Missing Authorization to Information Expsoure CVE-2024-4355 4.3 Krzysztof Zając May 29, 2024
2 StopBadBots <= 7.31 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2023-32496 4.4 Taihei Shimamine May 9, 2023
3 StopBadBots <= 7.23 - Missing Authorization to Arbitrary Plugin Installation CVE-2022-3883 6.5 István Márton November 18, 2022
4 WP Block and Stop Bad Bots <= 6.92 - SQL Injection CVE-2022-0949 9.8 cydave March 16, 2022
5 WP Block and Stop Bad Bots <= 6.88 - SQL Injection CVE-2021-25070 9.8 Krzysztof Zając March 8, 2022
6 WP Block and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection Plugin StopBadBots < 6.67 - Unauthenticated SQL Injection CVE-2021-24863 9.8 ZhongFu Su November 15, 2021
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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