CVE-2026-42338
MediumCVSS 6.1Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
The ip-address library before version 10.1.1 does not HTML-escape attacker-controlled content before embedding it in returned HTML strings. An application passing untrusted input to Address6 and rendering the output as HTML is vulnerable to cross-site scripting.
Risk Assessment
The risk is the possibility of executing arbitrary JavaScript in the victim's browser, potentially leading to data theft or session hijacking.
Recommendation
It is recommended to update the ip-address library to version 10.1.1 or later.
Original NVD description (English source)
ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.1.1, Address6.group() and Address6.link() do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressError.parseMessage (emitted by the Address6 constructor for invalid input) can contain unescaped attacker-controlled content in one branch. An application that (1) passes untrusted input to Address6 and (2) renders the output of these methods, or the thrown error's parseMessage, as HTML (e.g. via innerHTML) is vulnerable to cross-site scripting. This vulnerability is fixed in 10.1.1.