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PatchSiren cyber security CVE debrief

CVE-2026-39466 WPMU DEV - Your All-in-One WordPress Platform CVE debrief

A Blind SQL Injection vulnerability was discovered in the Broken Link Checker plugin for WordPress, affecting versions up to and including 2.4.7. This issue arises from improper neutralization of special elements used in an SQL command, which could allow attackers to inject malicious SQL code. The vulnerability has been assigned a CVSS score of 7.6, indicating a high severity level. Users of the Broken Link Checker plugin for WordPress should be aware of this vulnerability and take steps to mitigate it. The CVE record was published on 2026-04-08T09:16:21.830Z and has not been modified since then.

Vendor
WPMU DEV - Your All-in-One WordPress Platform
Product
Broken Link Checker
CVSS
HIGH 7.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

Users of the Broken Link Checker plugin for WordPress should be aware of this vulnerability and take steps to mitigate it. This includes updating the plugin to a version that addresses the vulnerability, implementing additional monitoring and logging to detect potential SQL injection attempts, and considering the use of a web application firewall to help protect against SQL injection attacks. System administrators and security teams responsible for WordPress installations should prioritize this update.

Technical summary

The Broken Link Checker plugin for WordPress is vulnerable to Blind SQL Injection. This issue arises from improper neutralization of special elements used in an SQL command. The vulnerability has been assigned a CVSS score of 7.6, indicating a high severity level. The plugin's vulnerability allows attackers to inject malicious SQL code without proper validation, which could lead to unauthorized access or data manipulation. Users of the plugin should update to a version that addresses this vulnerability.

Defensive priority

High priority should be given to updating the Broken Link Checker plugin to a version that addresses this vulnerability. Additionally, implementing monitoring and logging, and considering a web application firewall are recommended to enhance security.

Recommended defensive actions

  • Update the Broken Link Checker plugin to a version that addresses this vulnerability.
  • Implement additional monitoring and logging to detect potential SQL injection attempts.
  • Consider using a web application firewall to help protect against SQL injection attacks.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-04-08T09:16:21.830Z and was last modified on 2026-07-24T21:10:00.143Z. The NVD entry is currently Deferred. This information is based on the provided source corpus. Further verification is recommended to confirm the accuracy of this information.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-08T09:16:21.830Z and has not been modified since then. The NVD entry is currently Deferred.