Is CVE-2026-39466 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-39466 being exploited in the wild.

How severe is CVE-2026-39466?

High severity, with a CVSS score of 7.6, published 8 April 2026.

Which products and versions are affected?

WPMU DEV Broken Link Checker <= 2.4.7.

Is there a fix for CVE-2026-39466?

A patch was published on 2026-03-26: Patch released in version 2.4.8 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-39466 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-39466?

Check whether you run WPMU DEV Broken Link Checker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39466: WPMU DEV Broken Link Checker blind SQL injection

Q: Is there a fix for CVE-2026-39466?

A patch was published on 2026-03-26: Patch released in version 2.4.8 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-39466 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-39466?

Check whether you run WPMU DEV Broken Link Checker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39466 · Severity: high · CVSS 7.6 · Published 2026-04-08

Broken Link Checker is a popular WordPress plugin used to monitor and fix internal and external links on a website. A security vulnerability in this plugin could allow an attacker with high-level administrative access to perform unauthorized database queries. This could lead to the exposure of sensitive site information or disruption of database operations.

Technologies: WPMU DEV Broken Link Checker. Vendors: WPMU DEV.

Quick answers

Is CVE-2026-39466 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-39466 being exploited in the wild.
How severe is CVE-2026-39466?: High severity, with a CVSS score of 7.6, published 8 April 2026.
Which products and versions are affected?: WPMU DEV Broken Link Checker <= 2.4.7.
Is there a fix for CVE-2026-39466?: A patch was published on 2026-03-26: Patch released in version 2.4.8 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39466 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-39466?: Check whether you run WPMU DEV Broken Link Checker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A blind SQL injection vulnerability exists in the WPMU DEV Broken Link Checker plugin for WordPress due to improper neutralization of special elements in SQL commands. The flaw affects versions up to and including 2.4.7. An attacker with high privileges (such as an Editor or Administrator) can exploit this via network requests to interact directly with the underlying database. While the vulnerability requires authentication, the 'Blind' nature of the injection allows for the extraction of sensitive data through inference. The issue is addressed in version 2.4.8.

Affected products

WPMU DEV Broken Link Checker <= 2.4.7

Timeline

2026-02-24: other: Vulnerability reported by researcher daroo
2026-03-26: patched: Patch released in version 2.4.8
2026-04-08: disclosed: CVE published

References

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