CVE-2026-75528 json
Broken Link Checker <= 2.4.13 - Unauthenticated Stored Cross-Site Scripting via Comment Author URL / Link Log
published 2026-09-02 2 mo ago modified 2026-09-02 2 mo ago also EUVD-2026-69889
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpmudev Broken Link Checker
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/ec96308f-3944-48c5-94be-b1555c0830b7?source=cve
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.13/legacy/includes/admin/table-printer.php#L658
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.13/legacy/includes/links.php#L485
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L291
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L432
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.13/legacy/modules/containers/comment.php#L228
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.8/legacy/includes/admin/table-printer.php#L658
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.8/legacy/includes/links.php#L485
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L291
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L432
- plugins.trac.wordpress.org /browser/broken-link-checker/tags/2.4.8/legacy/modules/containers/comment.php#L228
- plugins.trac.wordpress.org /changeset?reponame=&new=3662785%40broken-link-checker%2Ftags%2F2.4.13.1&old=3644192%40broken-link-checker%2Ft
- plugins.trac.wordpress.org /changeset?old_path=%2Fbroken-link-checker/tags/2.4.13&new_path=%2Fbroken-link-checker/tags/2.4.13.1
Sources
- CVE List CVE-2026-75528
- NVD CVE-2026-75528
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.