XSS in Nanohttpd
CVE-2020-13697
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.008 (51.3th percentile) — read the EPSS interpretation.
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.
Affected products
- Nanohttpd
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-13697?
- CVE-2020-13697 is a medium-severity vulnerability in Nanohttpd, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-02-23.
- How severe is CVE-2020-13697?
- Medium severity. CVSS v3 base score is 6.1 out of 10.