Vulnerability Details : 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 category: Cross site scripting (XSS)
Products affected by CVE-2019-16521
- cpe:2.3:a:managewp:broken_link_checker:*:*:*:*:*:wordpress:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-16521
0.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-16521
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2019-16521
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-16521
-
http://www.openwall.com/lists/oss-security/2019/10/16/3
oss-security - [SBA-ADV-20190913-02] CVE-2019-16521: WordPress Plugin - Broken Link Checker <= 1.11.8 - Reflected XSSExploit;Mailing List;Third Party Advisory
-
https://wpvulndb.com/vulnerabilities/9917
Broken Link Checker <= 1.11.8 - Authenticated Reflected Cross-Site Scripting (XSS)Third Party Advisory
-
https://wordpress.org/plugins/broken-link-checker/#developers
Broken Link Checker – WordPress plugin | WordPress.orgProduct;Third Party Advisory
-
https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-02_WordPress_Plugin_Broken_Link_Checker
advisories/2019/SBA-ADV-20190913-02_WordPress_Plugin_Broken_Link_Checker at public · sbaresearch/advisories · GitHubExploit;Third Party Advisory
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