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WP Block and Stop Bad Bots <= 6.88 — SQL Injection

CVE-2021-25070Published · Updated

Action summary

Affected: <6.88Update to 6.90 or newer

All remediation steps
Watch plugin
Severity
Critical9.8
CVSS
9.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-89 SQL Injection
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection stopbadbots

  1. Affected< 6.88
  2. Patched in6.90

Update to 6.90 or newer.

You are affected if you run < 6.88. Version 6.90 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 6.90, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Krzysztof Zając.

The Block Bad Bots WordPress plugin before 6.88 does not properly sanitise and escape the User Agent before using it in a SQL statement to record logs, leading to an SQL Injection issue

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection

All 10
More vulnerabilities in Block Bad Bots and Stop Bad Bots Crawlers and Spiders and Anti Spam Protection
SeverityVulnerabilityCVEPublished
Medium6.5Insufficient Authorization to Unauthenticated Blocklist Bypass
≤11.58Update to 11.59
CVE-2025-9376
Medium4.3Missing Authorization to Information Expsoure
≤10.23Update to 10.24
CVE-2024-4355
Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤7.31Update to 7.32
CVE-2023-32496
Medium6.5Missing Authorization to Arbitrary Plugin Installation
≤7.23Update to 7.24
CVE-2022-3883
Critical9.8SQL Injection
<6.930Update to 6.930
CVE-2022-0949

Same weakness (SQL Injection)

All SQL Injection
Other SQL Injection vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity critical, CVSS 9.8

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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