Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Managewp | Broken Link Checker | <= 1.11.8 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2019/10/16/3ExploitMailing ListThird Party Advisory
- https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WExploitThird Party Advisory
- https://wordpress.org/plugins/broken-link-checker/#developersProductThird Party Advisory
- https://wpvulndb.com/vulnerabilities/9917Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/10/16/3ExploitMailing ListThird Party Advisory
- https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WExploitThird Party Advisory
- https://wordpress.org/plugins/broken-link-checker/#developersProductThird Party Advisory
- https://wpvulndb.com/vulnerabilities/9917Third Party Advisory
FAQ
What is CVE-2019-16521?
CVE-2019-16521 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 fil...
How severe is CVE-2019-16521?
CVE-2019-16521 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-16521?
Check the references section above for vendor advisories and patch information. Affected products include: Managewp Broken Link Checker.