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.
Does this matter?
Lower severity and a low EPSS score (1.40%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.40% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- managewp/broken link checker
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2019/10/16/3Exploit, Mailing List, Third Party Advisory
- https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WordPress_Plugin_Broken_Link_CheckerExploit, Third Party Advisory
- https://wordpress.org/plugins/broken-link-checker/#developersProduct, Third Party Advisory
- https://wpvulndb.com/vulnerabilities/9917Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/10/16/3Exploit, Mailing List, Third Party Advisory
- https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WordPress_Plugin_Broken_Link_CheckerExploit, Third Party Advisory
- https://wordpress.org/plugins/broken-link-checker/#developersProduct, Third Party Advisory
- https://wpvulndb.com/vulnerabilities/9917Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.