XSS in Managewp Broken Link Checker
CVE-2019-16521
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/broken-link-checker/ (Product, Third Party Advisory)
- github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WordPres… (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/10/16/3 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- wpvulndb.com/vulnerabilities/9917 (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16521?
- CVE-2019-16521 is a medium-severity vulnerability in Managewp Broken Link Checker, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-16.
- How severe is CVE-2019-16521?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-16521 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.