In short
- CVE-2020-13697 is a MEDIUM (CVSS 6.1) vulnerability affecting org.nanohttpd:nanohttpd-nanolets, nanohttpd (nanohttpd).
- Chance of exploitation in the next 30 days (EPSS): 0.76%, higher than 55.4% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
Description
An issue was discovered in RouterNanoHTTPD.java in NanoHTTPD through 2.3.1. The GeneralHandler class implements a basic GET handler that prints debug information as an HTML page. Any web server that extends this class without implementing its own GET handler is vulnerable to reflected XSS, because the GeneralHandler GET handler prints user input passed through the query string without any sanitization.
NVD description
An issue was discovered in RouterNanoHTTPD.java in NanoHTTPD through 2.3.1. The GeneralHandler class implements a basic GET handler that prints debug information as an HTML page. Any web server that extends this class without implementing its own GET handler is vulnerable to reflected XSS, because the GeneralHandler GET handler prints user input passed through the query string without any sanitization.
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