Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Beaugunderson | Ip-Address | < 10.1.1 |
Related Weaknesses (CWE)
References
- https://github.com/beaugunderson/ip-address/security/advisories/GHSA-v2v4-37r5-5ExploitMitigationVendor Advisory
- https://github.com/beaugunderson/ip-address/security/advisories/GHSA-v2v4-37r5-5ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-42338?
CVE-2026-42338 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2026-42338?
CVE-2026-42338 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42338?
Check the references section above for vendor advisories and patch information. Affected products include: Beaugunderson Ip-Address.