The broken-link-checker plugin through 1.11.8 for WordPress (aka Broken Link Checker) is…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
The broken-link-checker plugin through 1.11.8 for WordPress (aka Broken Link Checker) is susceptible to Reflected XSS due to improper encoding and insertion of an HTTP GET parameter into HTML. The filter function on the page listing all detected broken links can be exploited by providing an XSS payload in the s_filter GET parameter in a filter_id=search request. NOTE: this is an end-of-life product.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16521
- 2026-10-03 Alias added: GHSA-48cc-3r5m-2jp3
References
Exploit 2
More ManageWP Broken Link Checker vulnerabilities
- TI-2024-10107 Broken Link Checker < 2.4.2 - Admin+ SSRF CVSS 3.1MEDIUM 4.7
- TI-2022-03597 Broken Link Checker < 1.11.20 - Admin+ Cross-Site Scripting CVSS 3.1MEDIUM 4.8
- TI-2023-09550 WordPress MainWP Broken Links Checker Extension Plugin <= 4.0 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2022-02252 Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization CVSS 3.1HIGH 7.2
- TI-2019-12827 A reflected XSS vulnerability was found in includes/admin/table-printer.php in the… CVSS 3.1MEDIUM 5.4
- TI-2014-08405 Broken Link Checker Plugin Settings Page core.php options_page cross site scripting CVSS 3.1MEDIUM 6.1
Sources
- CVE-2019-16521 · CVE Program
- CVE-2019-16521 · NVD
- FIRST EPSS
- GHSA-48cc-3r5m-2jp3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences