CVE-2026-75528Broken Link Checker <= 2.4.13 - Unauthenticated Stored Cross-Site Scripting via Comment Author URL / Link Log
Updated under an hour ago ()
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The Broken Link Checker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author URL / Link Log in all versions up to, and including, 2.4.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires an administrator to perform the plugin's standard dismiss-and-recheck workflow on a link submitted by the attacker via the WordPress comment author URL field, after which the attacker's HTTP server issues a redirect to a URL containing an HTML/JavaScript payload that is stored verbatim in the link log.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Sep 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpmudev Broken Link Checker wpmudev:broken_link_checker (from the name) | through 2.4.13 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ec96308f-3944-48c5-94be-b1555c0830b7?source=cve
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/admin/table-printer.php#L658
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/links.php#L485
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L291
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L432
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/containers/comment.php#L228
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/admin/table-printer.php#L658
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/links.php#L485
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L291
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L432
- https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/containers/comment.php#L228
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3662785%40broken-link-checker%2Ftags%2F2.4.13.1&old=3644192%40broken-link-checker%2Ftags%2F2.4.13
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fbroken-link-checker/tags/2.4.13&new_path=%2Fbroken-link-checker/tags/2.4.13.1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.